9=0.1b+8.7

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Solution for 9=0.1b+8.7 equation:


Simplifying
9 = 0.1b + 8.7

Reorder the terms:
9 = 8.7 + 0.1b

Solving
9 = 8.7 + 0.1b

Solving for variable 'b'.

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

Add '-0.1b' to each side of the equation.
9 + -0.1b = 8.7 + 0.1b + -0.1b

Combine like terms: 0.1b + -0.1b = 0.0
9 + -0.1b = 8.7 + 0.0
9 + -0.1b = 8.7

Add '-9' to each side of the equation.
9 + -9 + -0.1b = 8.7 + -9

Combine like terms: 9 + -9 = 0
0 + -0.1b = 8.7 + -9
-0.1b = 8.7 + -9

Combine like terms: 8.7 + -9 = -0.3
-0.1b = -0.3

Divide each side by '-0.1'.
b = 3

Simplifying
b = 3

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