We read your photo as:

The problem is to solve 5 - 2x x - 1 and represent the solution on a number line.

Mathematics

ScanSolve AI Answer

Answer

n=−28,m=75n = -28, m = 75

Step-by-step solution

6 steps

Let's go through these problems.

Inequality:
The problem is to solve 5−2x≤x−15 - 2x \le x - 1 and represent the solution on a number line.

  1. Collect xx terms on one side and constants on the other.

    Add 2x2x to both sides:

    5≤x−1+2x5 \le x - 1 + 2x 5≤3x−15 \le 3x - 1

    Add 1 to both sides:

    5+1≤3x5 + 1 \le 3x 6≤3x6 \le 3x
  2. Isolate xx.

    Divide both sides by 3:

    63≤3x3\frac{6}{3} \le \frac{3x}{3} 2≤x2 \le x

    This can also be written as x≥2x \ge 2.

  3. Represent the solution on a number line.

    Draw a number line. Place a closed circle at 2 (because xx is greater than or equal to 2). Draw an arrow extending to the right from the closed circle, indicating all values greater than 2.

    Your solution and number line representation are correct.

    Simultaneous Linear Equations:
    The system of equations is:

    1. 5n+2m=105n + 2m = 10
    2. 3m+7n=293m + 7n = 29

    Your approach to multiply the equations to eliminate a variable is correct, but there was a small arithmetic error in your multiplication of the second equation.

    Let's re-solve using the elimination method. We will aim to eliminate mm.
    Rearrange equation (2) to align variables:

    1. 5n+2m=105n + 2m = 10
    2. 7n+3m=297n + 3m = 29
  4. Multiply equation (1) by 3 and equation (2) by 2 to make the coefficients of mm equal.

    Multiply (1) by 3:

    3(5n+2m)=3(10)3(5n + 2m) = 3(10) 15n+6m=30(Equation 3)15n + 6m = 30 \quad \text{(Equation 3)}

    Multiply (2) by 2:

    2(7n+3m)=2(29)2(7n + 3m) = 2(29) 14n+6m=58(Equation 4)14n + 6m = 58 \quad \text{(Equation 4)}

    (Note: In your work, you had 3×29=603 \times 29 = 60, but 3×29=873 \times 29 = 87. If you were trying to multiply equation (2) by 2, then 2×29=582 \times 29 = 58. Let's proceed with 2×29=582 \times 29 = 58 as per the elimination strategy for mm.)

  5. Subtract Equation 4 from Equation 3 to eliminate mm.

    (15n+6m)−(14n+6m)=30−58(15n + 6m) - (14n + 6m) = 30 - 58 15n−14n+6m−6m=−2815n - 14n + 6m - 6m = -28 n=−28n = -28
  6. Substitute the value of nn into one of the original equations to find mm.

    Using Equation 1: 5n+2m=105n + 2m = 10

    5(−28)+2m=105(-28) + 2m = 10 −140+2m=10-140 + 2m = 10

    Add 140 to both sides:

    2m=10+1402m = 10 + 140 2m=1502m = 150

    Divide by 2:

    m=1502m = \frac{150}{2} m=75m = 75

    The solution is n=−28n = -28 and m=75m = 75.

    The final answer is n=−28,m=75n = -28, m = 75.

Was this helpful?

Try one yourself

A new problem that tests the same skill.

Still stuck on this one?

Ask a follow-up, and the answer starts from this question.

Got a different question?Ask your own question
Handwritten step-by-step solution preview

Handwritten Step-by-Step Solution

Get this as a handwritten image on WhatsApp — like a tutor wrote it for you.

Try on WhatsApp