Question

Isolate x in the first equation:

Answer 1

If y is substitute into either of the original equation. The  solution as an ordered pair are: x=-2; y=3.

The solution as an ordered pair

x + 3y= 7 equation 1

x+2y=4 equation 2

Solving for y

x+3y-(x+2y)=7-4

x+3y-z-2y=7-4

3y-2y=7-4

y=7-4

y=3

Substitute y=3 into equation 2

x+2y=4

x+2×3=4

x+6=4

Collect like terms

x=4-6

x=-2

Therefore the  solution as an ordered pair are: x=-2; y=3.

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