Solve for x
x=-10
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8\times 5=x\left(-4\right)
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 8x, the least common multiple of x,8.
40=x\left(-4\right)
Multiply 8 and 5 to get 40.
x\left(-4\right)=40
Swap sides so that all variable terms are on the left hand side.
x=\frac{40}{-4}
Divide both sides by -4.
x=-10
Divide 40 by -4 to get -10.
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