What is the value of "x" for each equation? also, provide your process in how you solved this.

8 + 3b = -13

x-3/4 = 12
^^(thats a fraction)

14 + 3x = 8n - 3(n-4)

22x + 11 = 4x - 7

8+3b=-13
3b=-13-8
3b=-21
b= -7

Is the fraction (x-3)/4? If so...
(x-3)/4=12
x-3=12x4
x-3=48
x=48+3
x=51

14+3x=8x-3(x-4)
14+3x=8x-3x+12
14+3x=5x+12
14-12=5x-3x
2=2x
1=x

22x+11=4x-7
22x-4x=-7-11
18x=-18
x= -1

The lateral side of a triangular pyramid is a triangle. in order to increase the lateral surface area, the slant height and the height should be altered