**2x + 3X - 5 = 4x + 20 Solve for x, X (opposite of x) and check**

**Answer:**

2x + 3X - 5 = 4x + 20

2x+3x-4x=20+5

x=25

2*25+3*25-4*25=25

25=25

x = 25, I dont understand what you mean by “X (opposite of x)”, but you can plug 25 in for x and it checks.

2(25)+3(25)-5 = 120

120 = 4(25)+20