Solve for x
x=9
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5x=3\times 15
Multiply both sides of the equation by 105, the least common multiple of 21,35.
5x=45
Multiply 3 and 15 to get 45.
x=\frac{45}{5}
Divide both sides by 5.
x=9
Divide 45 by 5 to get 9.
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