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5\times 10+\left(x-2\right)\times 4=x\times 5
Variable x cannot be equal to any of the values 0,2 since division by zero is not defined. Multiply both sides of the equation by x\left(x-2\right), the least common multiple of x\left(x-2\right),x,x-2.
50+\left(x-2\right)\times 4=x\times 5
Multiply 5 and 10 to get 50.
50+4x-8=x\times 5
Use the distributive property to multiply x-2 by 4.
42+4x=x\times 5
Subtract 8 from 50 to get 42.
42+4x-x\times 5=0
Subtract x\times 5 from both sides.
42-x=0
Combine 4x and -x\times 5 to get -x.
-x=-42
Subtract 42 from both sides. Anything subtracted from zero gives its negation.
x=42
Multiply both sides by -1.