3 years ago

Solve the system of linear equations by substitution. 9. 2x+3y=25 and 4x-y=15

Mathematics

1 answer:

lana66690 [7]3 years ago

4 0

2x+3(4x-15)=25
14x-45=25
14x=70
x=5
y=5
(5,5)

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