Question

Select the best possible first step to solving the system by first eliminating the y variable.
4x - 5y = 4
3x + 2y = -20
Answer

Multiply the first equation by -2 and multiply the second equation by 5.

Multiply the first equation by 2 and multiply the second equation by -5.

Multiply the first equation by 2 and multiply the second equation by 5.

None of the above

Answer 1

Multiply first equation by 2 and multiply second equation by 5.
2(4x-5y=4) => 8x-10y=8
5(3x+2y=-20) =>+ 15x+10y=-100
23x = -92