1 (х-3,25)*3,6=1,62
раскроем скобки
3.6x-11.7 = 1.62
3.6x-13.32 = 0
3.6x = 13.32
x = 3.7
2 1,7х+21+3,1х=57
1,7x + 3,1x = 57 – 21
4.8x = 36
x = 7.5
1 (х-3,25)*3,6=1,62
раскроем скобки
3.6x-11.7 = 1.62
3.6x-13.32 = 0
3.6x = 13.32
x = 3.7
2 1,7х+21+3,1х=57
1,7x + 3,1x = 57 – 21
4.8x = 36
x = 7.5