0.80x-0.40(20+x)=0.40(20)

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Solution for 0.80x-0.40(20+x)=0.40(20) equation: 


Simplifying
0.80x + -0.40(20 + x) = 0.40(20)
0.80x + (20 * -0.40 + x * -0.40) = 0.40(20)
0.80x + (-8 + -0.40x) = 0.40(20)

Reorder the terms:
-8 + 0.80x + -0.40x = 0.40(20)

Combine like terms: 0.80x + -0.40x = 0.4x
-8 + 0.4x = 0.40(20)

Multiply 0.40 * 20
-8 + 0.4x = 8

Solving
-8 + 0.4x = 8

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '8' to each side of the equation.
-8 + 8 + 0.4x = 8 + 8

Combine like terms: -8 + 8 = 0
0 + 0.4x = 8 + 8
0.4x = 8 + 8

Combine like terms: 8 + 8 = 16
0.4x = 16

Divide each side by '0.4'.
x = 40

Simplifying
x = 40

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