90=30+0.40(x-60)

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Solution for 90=30+0.40(x-60) equation:


Simplifying
90 = 30 + 0.40(x + -60)

Reorder the terms:
90 = 30 + 0.40(-60 + x)
90 = 30 + (-60 * 0.40 + x * 0.40)
90 = 30 + (-24 + 0.40x)

Combine like terms: 30 + -24 = 6
90 = 6 + 0.40x

Solving
90 = 6 + 0.40x

Solving for variable 'x'.

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

Add '-0.40x' to each side of the equation.
90 + -0.40x = 6 + 0.40x + -0.40x

Combine like terms: 0.40x + -0.40x = 0.00
90 + -0.40x = 6 + 0.00
90 + -0.40x = 6

Add '-90' to each side of the equation.
90 + -90 + -0.40x = 6 + -90

Combine like terms: 90 + -90 = 0
0 + -0.40x = 6 + -90
-0.40x = 6 + -90

Combine like terms: 6 + -90 = -84
-0.40x = -84

Divide each side by '-0.40'.
x = 210

Simplifying
x = 210

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