7=.40(25+x)

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Solution for 7=.40(25+x) equation:


Simplifying
7 = 0.40(25 + x)
7 = (25 * 0.40 + x * 0.40)
7 = (10 + 0.40x)

Solving
7 = 10 + 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.
7 + -0.40x = 10 + 0.40x + -0.40x

Combine like terms: 0.40x + -0.40x = 0.00
7 + -0.40x = 10 + 0.00
7 + -0.40x = 10

Add '-7' to each side of the equation.
7 + -7 + -0.40x = 10 + -7

Combine like terms: 7 + -7 = 0
0 + -0.40x = 10 + -7
-0.40x = 10 + -7

Combine like terms: 10 + -7 = 3
-0.40x = 3

Divide each side by '-0.40'.
x = -7.5

Simplifying
x = -7.5

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