Do u want us to solve if so i will do that
1. Multiply both sides by 4x-1

2.Simplify

3.Multiply both sides by 7
4x-1=3x7
4.Simplify 3*7 to 21
4x-1=21
5. Add one to both sides
4x=21+1
6. Simplify 21+1 to 22
4x=22
7.Divide both sides by 4
x=
8.Simplify

to
Answer:
50 is the sum
Step-by-step explanation:
-10+20=10
10+-40=-30
-30+80=50