132-(х-5)*9=69
раскроем скобки
132-9x+45 = 69
-9x+108 = 0
9x-108 = 0
9x = 108
x = 12
123-(8х-11)*2=49
123-16x+22 = 49
-16x+96 = 0
16x-96 = 0
16x = 96
x = 6
3(х+7)+16=52
3x + 21 + 16 = 52
3x = 52 – 16 – 21
3x = 15
x = 5
51:(4у-9)=17
4 у-9=51:17
4 у-9 = 3
4 у=3+9
4 у=12
у=3
132-(х-5)*9=69
раскроем скобки
132-9x+45 = 69
-9x+108 = 0
9x-108 = 0
9x = 108
x = 12
123-(8х-11)*2=49
раскроем скобки
123-16x+22 = 49
-16x+96 = 0
16x-96 = 0
16x = 96
x = 6
3(х+7)+16=52
3x + 21 + 16 = 52
3x = 52 – 16 – 21
3x = 15
x = 5
51:(4у-9)=17
4 у-9=51:17
4 у-9 = 3
4 у=3+9
4 у=12
у=3