3.5b+7=-10.5

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Solution for 3.5b+7=-10.5 equation: 


Simplifying
3.5b + 7 = -10.5

Reorder the terms:
7 + 3.5b = -10.5

Solving
7 + 3.5b = -10.5

Solving for variable 'b'.

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

Add '-7' to each side of the equation.
7 + -7 + 3.5b = -10.5 + -7

Combine like terms: 7 + -7 = 0
0 + 3.5b = -10.5 + -7
3.5b = -10.5 + -7

Combine like terms: -10.5 + -7 = -17.5
3.5b = -17.5

Divide each side by '3.5'.
b = -5

Simplifying
b = -5

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