Given the following find TM?

Question

Answer 1

If R_MT_M = R_RT_R and R_M = 8 and R_R = 2, then 8T_M = 2T_R (just plug in the values)

Then since T_R = 5 - T_M, plug in "5 - T_M" in place of T_R into the 8T_M = 2T_R equation to get:

8T_M = 2(5 - T_M).

Distribute to eliminate the parentheses: 8T_M = 10 - 2T_M then add 2T_M to both sides to get:

10T_M = 10

Now divide both sides by 10 to get T_M = 1