Solve for u
u = -\frac{39}{7} = -5\frac{4}{7} \approx -5.571428571
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4=-7\left(u+5\right)
Variable u cannot be equal to -5 since division by zero is not defined. Multiply both sides of the equation by u+5.
4=-7u-35
Use the distributive property to multiply -7 by u+5.
-7u-35=4
Swap sides so that all variable terms are on the left hand side.
-7u=4+35
Add 35 to both sides.
-7u=39
Add 4 and 35 to get 39.
u=\frac{39}{-7}
Divide both sides by -7.
u=-\frac{39}{7}
Fraction \frac{39}{-7} can be rewritten as -\frac{39}{7} by extracting the negative sign.
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