7x - 3+x = 4x-9+5x
8x-9x= - 9+3
-x = - 6
x = 6
Объяснение:
7x - 3 + x=4x - 9 + 5x
8x - 3 = 9x - 9
9 - 3 = 9x - 8x
6 = x
7x - 3+x = 4x-9+5x
8x-9x= - 9+3
-x = - 6
x = 6
x = 6
Объяснение:
7x - 3 + x=4x - 9 + 5x
8x - 3 = 9x - 9
9 - 3 = 9x - 8x
6 = x
x = 6