0.7x-0.3(40+x)=0.1(40)

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Solution for 0.7x-0.3(40+x)=0.1(40) equation:


Simplifying
0.7x + -0.3(40 + x) = 0.1(40)
0.7x + (40 * -0.3 + x * -0.3) = 0.1(40)
0.7x + (-12 + -0.3x) = 0.1(40)

Reorder the terms:
-12 + 0.7x + -0.3x = 0.1(40)

Combine like terms: 0.7x + -0.3x = 0.4x
-12 + 0.4x = 0.1(40)

Multiply 0.1 * 40
-12 + 0.4x = 4

Solving
-12 + 0.4x = 4

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 0.4x = 4 + 12

Combine like terms: -12 + 12 = 0
0 + 0.4x = 4 + 12
0.4x = 4 + 12

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

Divide each side by '0.4'.
x = 40

Simplifying
x = 40

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