0.1(40)+0.8x=0.4(40+x)

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Solution for 0.1(40)+0.8x=0.4(40+x) equation:


Simplifying
0.1(40) + 0.8x = 0.4(40 + x)

Multiply 0.1 * 40
4 + 0.8x = 0.4(40 + x)
4 + 0.8x = (40 * 0.4 + x * 0.4)
4 + 0.8x = (16 + 0.4x)

Solving
4 + 0.8x = 16 + 0.4x

Solving for variable 'x'.

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

Add '-0.4x' to each side of the equation.
4 + 0.8x + -0.4x = 16 + 0.4x + -0.4x

Combine like terms: 0.8x + -0.4x = 0.4x
4 + 0.4x = 16 + 0.4x + -0.4x

Combine like terms: 0.4x + -0.4x = 0.0
4 + 0.4x = 16 + 0.0
4 + 0.4x = 16

Add '-4' to each side of the equation.
4 + -4 + 0.4x = 16 + -4

Combine like terms: 4 + -4 = 0
0 + 0.4x = 16 + -4
0.4x = 16 + -4

Combine like terms: 16 + -4 = 12
0.4x = 12

Divide each side by '0.4'.
x = 30

Simplifying
x = 30

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