-7=13+.4b

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Solution for -7=13+.4b equation:


Simplifying
-7 = 13 + 0.4b

Solving
-7 = 13 + 0.4b

Solving for variable 'b'.

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

Add '-0.4b' to each side of the equation.
-7 + -0.4b = 13 + 0.4b + -0.4b

Combine like terms: 0.4b + -0.4b = 0.0
-7 + -0.4b = 13 + 0.0
-7 + -0.4b = 13

Add '7' to each side of the equation.
-7 + 7 + -0.4b = 13 + 7

Combine like terms: -7 + 7 = 0
0 + -0.4b = 13 + 7
-0.4b = 13 + 7

Combine like terms: 13 + 7 = 20
-0.4b = 20

Divide each side by '-0.4'.
b = -50

Simplifying
b = -50

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