Solve for R
R=100
Quiz
Linear Equation
5 problems similar to:
\frac { 2 } { R } = \frac { 1 } { 25 } - \frac { 1 } { 50 }
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50\times 2=50R\times \frac{1}{25}+50R\left(-\frac{1}{50}\right)
Variable R cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 50R, the least common multiple of R,25,50.
100=50R\times \frac{1}{25}+50R\left(-\frac{1}{50}\right)
Multiply 50 and 2 to get 100.
100=\frac{50}{25}R+50R\left(-\frac{1}{50}\right)
Multiply 50 and \frac{1}{25} to get \frac{50}{25}.
100=2R+50R\left(-\frac{1}{50}\right)
Divide 50 by 25 to get 2.
100=2R-R
Cancel out 50 and 50.
100=R
Combine 2R and -R to get R.
R=100
Swap sides so that all variable terms are on the left hand side.
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