Solve for R: T = 1/3R - 15T=13R15?

2 Answers
Sep 3, 2017

See a process below:

Explanation:

Step 1) Add color(red)(15)15 to each side of the equation to isolate the RR term while keeping the equation balanced:

T + color(red)(15) = 1/3R - 15 + color(red)(15)T+15=13R15+15

T + 15 = 1/3R - 0T+15=13R0

T + 15 = 1/3RT+15=13R

Step 2) Multiply each side by color(red)(3)3 to solve for RR while keeping the equation balanced:

color(red)(3)(T + 15) = color(red)(3) xx 1/3R3(T+15)=3×13R

color(red)(3)T + (color(red)(3) xx 15) = color(red)(3)/3R3T+(3×15)=33R

3T + 45 = 1R3T+45=1R

3T + 45 = R3T+45=R

R = 3T + 45R=3T+45

Sep 3, 2017

R = 3(T+15)R=3(T+15)

Or

R =3T+45R=3T+45

Explanation:

You need to make RR the subject of the formula.

color(blue)(1/3R)-15 = T" "larr13R15=T isolate the term which contains RR

Add 1515 to both sides to get:

1/3color(red)(R)= T+15" "larr13R=T+15 isolate RR by multiplying by 33

R = 3(T+15)R=3(T+15)

This can also be simplified to

R =3T+45R=3T+45