Solve for x
x=10
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x\times 2.8=4\times 7
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 4x, the least common multiple of 4,x.
x\times 2.8=28
Multiply 4 and 7 to get 28.
x=\frac{28}{2.8}
Divide both sides by 2.8.
x=\frac{280}{28}
Expand \frac{28}{2.8} by multiplying both numerator and the denominator by 10.
x=10
Divide 280 by 28 to get 10.
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