A system of equations is shown below:

Equation A: 2c = d − 8
Equation B: c = 3d + 8

Which of the following steps should be performed to eliminate variable d first?

Multiply equation B by 2.
Multiply equation A by 2.
Multiply equation B by 3.
Multiply equation A by −3.

Question

A system of equations is shown below:

Equation A: 2c = d − 8
Equation B: c = 3d + 8

Which of the following steps should be performed to eliminate variable d first?

 Multiply equation B by 2.
 Multiply equation A by 2.
 Multiply equation B by 3.
 Multiply equation A by −3.

misty1212 · Answer

HI again again
if you multiply the first by $-3$ it will have $-3d$ and the second has$3d$ so when you add the $d$'s will go bye bye

misty1212 · Answer

i.e. 
 Multiply equation A by −3.