Solve for x
x=640
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10x+x\times 4=8960
Multiply both sides of the equation by 2.
14x=8960
Combine 10x and x\times 4 to get 14x.
x=\frac{8960}{14}
Divide both sides by 14.
x=640
Divide 8960 by 14 to get 640.
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