Solve for u
u=-5.8
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-0.9\times 3=u+3.1
Multiply both sides by 3.
-2.7=u+3.1
Multiply -0.9 and 3 to get -2.7.
u+3.1=-2.7
Swap sides so that all variable terms are on the left hand side.
u=-2.7-3.1
Subtract 3.1 from both sides.
u=-5.8
Subtract 3.1 from -2.7 to get -5.8.
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Limits
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