4x - 2x = - 3 - 5
2x = - 8
x = - 4
B stands for Area of the base in the volume formula
6(2x-11)+15=3x+12 Given
12x-66+15=3x+12 Distribution
12x-51=3x+12 Combine like terms
12x=3x+63 addition
9x=63 subtraction
x=7 division
the value of x that makes the equation true is 7.
Solve each one to find that D is the answer