4x+y=10.x+y=7

Mathematics

ScanSolve AI Answer

Answer

x=1, y=6x=1,\ y=6

Step-by-step solution

5 steps
  1. Label the given equations.

    {4x+y=10x+y=7\begin{cases} 4x + y = 10 \\ x + y = 7 \end{cases}
  2. Subtract the second equation from the first to eliminate yy.

    (4x+y)−(x+y)=10−7(4x + y) - (x + y) = 10 - 7 4x+y−x−y=34x + y - x - y = 3 3x=33x = 3
  3. Solve for xx.

    x=33=1x = \frac{3}{3} = 1
  4. Substitute x=1x = 1 into the second equation to solve for yy.

    1+y=71 + y = 7 y=7−1=6y = 7 - 1 = 6
  5. Verify the solution in the first equation.

    4(1)+6=4+6=104(1) + 6 = 4 + 6 = 10

    The solution is correct.

    Final answer:

    x=1, y=6\boxed{x=1,\ y=6}
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