Question

Solving Linear Systems by Substitution x+y=5 -3x+2y=5

Answer 1

x=8.5

y=-3.5

Explanation:

lets say x=5-y

substituting x in the other equation gives -3(5-y)+2y=5

-15+3+2y=5

2y=5+15-3

2y=17

y=8.5

from equation 1 : x+8.5=5

x=5-8.5

x=-3.5

Answer 2

X=1

y=4

Please see the attached picture for full solution...

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