(2x+3)-(5x+11)=7+(13-2x)
2x + 3 – 5x – 11 = 7 + 13 – 2x
2x – 5x + 2x = 13 + 7 + 11 – 3
-x = 28
x = -28
(2x+3)+(3x+4)+(5x+5)=12-7x
2x + 3 + 3x + 4 + 5x + 5 = 12 – 7x
2x + 3x + 5x + 7x = 12 – 5 – 4 – 3
x = 0
(2x+3)-(5x+11)=7+(13-2x)
2x + 3 – 5x – 11 = 7 + 13 – 2x
2x – 5x + 2x = 13 + 7 + 11 – 3
-x = 28
x = -28
(2x+3)+(3x+4)+(5x+5)=12-7x
2x + 3 + 3x + 4 + 5x + 5 = 12 – 7x
2x + 3x + 5x + 7x = 12 – 5 – 4 – 3
x = 0