3 years ago

9x + 7y = 10 7x + 7y = 14

Mathematics

2 answers:

exis [7]3 years ago

7 0

Y=4/7
x=4/9
this is the answer

Veronika [31]3 years ago

3 0

Multiply the second row by -1 to cancel out the 7x.
9x+7y=10
-7x-7y=-14
2x=-4
x=-2

9(-2)+7y=10
-18+7y=10
7y=28
y=4

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