Which of the following could be the first steps toward solving the system, 4x+y=30, - 12x+2y=20
?
Select all that apply! Select all that apply!
a) Multiply the second equation by 2 and then add.
b) Multiply the first equation by 2 and then subtract.
c) Divide the second equation by 2 and then subtract.
d) Multiply the second equation by 3 and then subtract.
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