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5\left(2x+5\right)=4x
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 10x, the least common multiple of 2x,5.
10x+25=4x
Use the distributive property to multiply 5 by 2x+5.
10x+25-4x=0
Subtract 4x from both sides.
6x+25=0
Combine 10x and -4x to get 6x.
6x=-25
Subtract 25 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-25}{6}
Divide both sides by 6.
x=-\frac{25}{6}
Fraction \frac{-25}{6} can be rewritten as -\frac{25}{6} by extracting the negative sign.