veksetz

2021-12-21

Solve using substitution:
35x-5y=20 and y=7x+4

Janet Young

Expert

Substitute (7x+4)for y in the first equation and solve for x
35x-5(7x+4)=20
35x-35x-20=20
0-20=20
$-20\ne 20$
Thus, there are no solutions to this system of equations.

intacte87

Expert

There is no solution.

RizerMix

Expert

$35x-5\left(7x+4\right)=20$
$35x-\left(5×7x\right)+\left(5×4\right)=20$
$35x-35x-20=20$
$0-20=20$
$0=40$
$0\ne 40$

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