Solve for x
x=10
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5x+2x=70
Multiply both sides of the equation by 10, the least common multiple of 2,5.
7x=70
Combine 5x and 2x to get 7x.
x=\frac{70}{7}
Divide both sides by 7.
x=10
Divide 70 by 7 to get 10.
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