Solve for z
z=10
Quiz
Linear Equation
5 problems similar to:
\frac { 11 } { z } = \frac { 3 } { 2 } - \frac { 2 } { 5 }
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10\times 11=10z\times \frac{3}{2}+10z\left(-\frac{2}{5}\right)
Variable z cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 10z, the least common multiple of z,2,5.
110=10z\times \frac{3}{2}+10z\left(-\frac{2}{5}\right)
Multiply 10 and 11 to get 110.
110=\frac{10\times 3}{2}z+10z\left(-\frac{2}{5}\right)
Express 10\times \frac{3}{2} as a single fraction.
110=\frac{30}{2}z+10z\left(-\frac{2}{5}\right)
Multiply 10 and 3 to get 30.
110=15z+10z\left(-\frac{2}{5}\right)
Divide 30 by 2 to get 15.
110=15z+\frac{10\left(-2\right)}{5}z
Express 10\left(-\frac{2}{5}\right) as a single fraction.
110=15z+\frac{-20}{5}z
Multiply 10 and -2 to get -20.
110=15z-4z
Divide -20 by 5 to get -4.
110=11z
Combine 15z and -4z to get 11z.
11z=110
Swap sides so that all variable terms are on the left hand side.
z=\frac{110}{11}
Divide both sides by 11.
z=10
Divide 110 by 11 to get 10.
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