Using substitution method solve 3x+4y=7 2x-3y=-1

Kye 2021-02-11 Answered
Using substitution method solve
3x+4y=7
2x3y=1
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Expert Answer

Faiza Fuller
Answered 2021-02-12 Author has 108 answers
From the second equation, 2x=3y1, so x=3y12.
Substitute for x in the first equation:
33y12+4y=7, multiply each side by 2:
3(3y1)+8y=14,9y3+8y=14,17y=17,y=1, therefore x=312=22=1.
Solution: x=1, y=1.
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