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OpenStudy (anonymous):
PLEASE HELP ME??!! Notice that there is 2y in the first equation and -y in the second. If we had -2y in the second equation, then -2y (in second equation) and 2y (in the first equation) would eliminate the y because they add up to zero. The way we make the -y of the second equation become -2y is by multiplying the entire second equation by 2. We need to multiply both sides of the equation by 2. 2(2x - y) = 2(6) We multiplied both sides of the second equation by 2 as shown above. Now we have: 4x - 2y = 12 Now the second equation has the -2y term that we need. Now we rewrite the first
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