Answer:
B: 1/2x - 37 = -84
add 37 to each side,
1/2x = -47
Multiply each side by 2
x = -94
C: 3x/4 = 6/7
multiply each side by 4
3x = 3 3/7
Divide each side by 3
x = 1 1/7
D: 9a + 15 = 10a - 7
add 7 to each side.
9a + 22 = 10a
Subtract 9a from each side
22 = a
