1) (х+19)×11=242
раскроем скобки
11x+209 = 242
11x-33 = 0
11x = 33
x = 3
2) 10х-7х-13=17
10x – 7x = 17 + 13
3x = 30
x = 10
1) (х+19)×11=242
раскроем скобки
11x+209 = 242
11x-33 = 0
11x = 33
x = 3
2) 10х-7х-13=17
10x – 7x = 17 + 13
3x = 30
x = 10