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Solve the system of linear equations: 3x + 2y = 8 and 2x − y = 3.

Mathematics

ScanSolve AI Answer

Answer

x=2,y=1x=2, y=1

Step-by-step solution

6 steps
  1. Identify the system of equations.

    The given system of equations is:

    3x+2y=8(1)3x + 2y = 8 \quad \text{(1)} 2x−y=3(2)2x - y = 3 \quad \text{(2)}
  2. Multiply equation (2) by 2 to make the coefficients of yy opposites.

    2(2x−y)=2(3)2(2x - y) = 2(3) 4x−2y=6(3)4x - 2y = 6 \quad \text{(3)}
  3. Add equation (1) and equation (3) to eliminate yy.

    (3x+2y)+(4x−2y)=8+6(3x + 2y) + (4x - 2y) = 8 + 6 3x+4x+2y−2y=143x + 4x + 2y - 2y = 14 7x=147x = 14
  4. Solve for xx.

    x=147x = \frac{14}{7} x=2x = 2
  5. Substitute the value of xx into equation (2) to solve for yy.

    2(2)−y=32(2) - y = 3 4−y=34 - y = 3
  6. Solve for yy.

    −y=3−4-y = 3 - 4 −y=−1-y = -1 y=1y = 1

    The solution to the system of equations is:

    x=2,y=1x=2, y=1
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