A system of equations is shown below:
Equation A: 4c = d − 8
Equation B: c = 5d + 8
Which of the following steps should be performed to eliminate variable d first? (5 points)
A: Multiply equation B by 4.
B: Multiply equation A by −5.
C: Multiply equation A by 4.
D: Multiply equation B by 5.
1 answer
B: Multiply equation A by −5.