Solve for b
b=-17.4
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3.1\left(-4\right)=b+5
Multiply both sides by -4.
-12.4=b+5
Multiply 3.1 and -4 to get -12.4.
b+5=-12.4
Swap sides so that all variable terms are on the left hand side.
b=-12.4-5
Subtract 5 from both sides.
b=-17.4
Subtract 5 from -12.4 to get -17.4.
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