Question

M = T - R for T

Solve for variable (?)

Answer 1

add R to both sides...what do you get?

Answer 2

r + m = t

Answer 3

M = T - R

Solve for Variable T

this means you want an equation which say T = ....

to do this you need to move everything to the opposite side of T
On the left side we have a positive M
on the right side we have a Positive T and a negative R
the T is in the right place so we just need to move the negative R onto the left side
to do this we need to eliminate it on the right side
to do this we do the opposite to the sign infront of R
we have a negative R so we have to add R
but if we are adding R onto the right side we have to do the same on the left side so we get
M+R= T-R+R

the -R+R cancel out
this gives
M+R=T