7x + 3y = m
3y = m - 7x
y = (m - 7x) / 3
4( r + 3 ) = t
r + 3 = t / 4
r = ( t - 3 )/ 4
2x + b = w
2x = w- b
x = ( w - b ) / 2
x (1 + y) = 2
x = 2 / 1 +y
Answer:
I think The best choice is A
Step-by-step explanation: