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OpenStudy (anonymous):
solve the system. What is the value of x? y=3x and 4x+2y=30
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OpenStudy (anonymous):
y=3x ------> 1st equation. 4x+2y=30 ----> 2nd equation. change the y in second equation as indicated in 1st equation. y = 3x so: 4x + 2(3x) = 30 4x + 6x = 30 10x = 30 x = 3
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