Помогите пожалуйста решить, СРОЧНО! Заранее спасибо.
22.
x + x + x + x = 40
4x = 40
x = 10
54*x=54:x
54*x²=54
x²=1
x₁=-1
x₂=1
x+x+x=0
x=0
x - 19 = 0
x = 19
x + 40 = 40
x = 0
88 - 2x = 86
2x = 2
x = 1
23.
x = 90 : 30 = 3
x = 70 : 10 = 7
x = 70 - 10 = 60
x = 60 + 30 = 90
x = 8 + 9 = 17
x = 9*8 = 72
x = 42 - 42 = 0
x = 42 : 42 = 1
x = 54 - 54 = 0
x = 0 : 54 = 0
x = 76 : 2 = 38
x = 3 * 15 = 45
X=10 x=1 x=0 x=19 x=0 x=1 номер23 x=3 x=7 x=60 x=90 x=17 x=72 x=0 x=1 x=0 x=0 x=36 x=45