(2x-5)-(3x-7)=4
2x – 5 – 3x + 7 = 4
2x – 3x = 4 – 7 + 5
-x = 2
x = -2
проверка
(2*(-2)-5)-(3*(-2)-7)=4
4=4
(2x-5)-(3x-7)=4 2x – 5 – 3x + 7 = 4 2x – 3x = 4 – 7 + 5 -x = 2 x = -2 проверка (2*(-2)-5)-(3*(-2)-7)=4 4=4
(2x-5)-(3x-7)=4
2x – 5 – 3x + 7 = 4
2x – 3x = 4 – 7 + 5
-x = 2
x = -2
проверка
(2*(-2)-5)-(3*(-2)-7)=4
4=4
(2x-5)-(3x-7)=4 2x – 5 – 3x + 7 = 4 2x – 3x = 4 – 7 + 5 -x = 2 x = -2 проверка (2*(-2)-5)-(3*(-2)-7)=4 4=4