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OpenStudy (anonymous):
solve the following system of linear equations by substitution: 3x+3y=18 and 2y=-10+4
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OpenStudy (smurfy14):
x=9 y=-3
OpenStudy (anonymous):
divide 2 from 2y=-10x+4 to get: y=-5x+2. Then substitute this equation into the other one, to make it look like this: 3x+3(-5x+2)=18. Solve for x. Then substitute x into one of the original equations to get y.
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