.7x+.2(30)=.4(x+30)

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Solution for .7x+.2(30)=.4(x+30) equation:


Simplifying
0.7x + 0.2(30) = 0.4(x + 30)

Multiply 0.2 * 30
0.7x + 6 = 0.4(x + 30)

Reorder the terms:
6 + 0.7x = 0.4(x + 30)

Reorder the terms:
6 + 0.7x = 0.4(30 + x)
6 + 0.7x = (30 * 0.4 + x * 0.4)
6 + 0.7x = (12 + 0.4x)

Solving
6 + 0.7x = 12 + 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.
6 + 0.7x + -0.4x = 12 + 0.4x + -0.4x

Combine like terms: 0.7x + -0.4x = 0.3x
6 + 0.3x = 12 + 0.4x + -0.4x

Combine like terms: 0.4x + -0.4x = 0.0
6 + 0.3x = 12 + 0.0
6 + 0.3x = 12

Add '-6' to each side of the equation.
6 + -6 + 0.3x = 12 + -6

Combine like terms: 6 + -6 = 0
0 + 0.3x = 12 + -6
0.3x = 12 + -6

Combine like terms: 12 + -6 = 6
0.3x = 6

Divide each side by '0.3'.
x = 20

Simplifying
x = 20

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