0.7x-0.3(x+20)=4

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Solution for 0.7x-0.3(x+20)=4 equation: 


Simplifying
0.7x + -0.3(x + 20) = 4

Reorder the terms:
0.7x + -0.3(20 + x) = 4
0.7x + (20 * -0.3 + x * -0.3) = 4
0.7x + (-6 + -0.3x) = 4

Reorder the terms:
-6 + 0.7x + -0.3x = 4

Combine like terms: 0.7x + -0.3x = 0.4x
-6 + 0.4x = 4

Solving
-6 + 0.4x = 4

Solving for variable 'x'.

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

Add '6' to each side of the equation.
-6 + 6 + 0.4x = 4 + 6

Combine like terms: -6 + 6 = 0
0 + 0.4x = 4 + 6
0.4x = 4 + 6

Combine like terms: 4 + 6 = 10
0.4x = 10

Divide each side by '0.4'.
x = 25

Simplifying
x = 25

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