Question

Решите уравнения:
(1) 9,14 + x = 5,21
(2) х + 23 = 18
(3) -31 - х = -9

Answer 1

1) 9,14+х=5,21
х=5,21-9,14
х= -3,93
2) х+23=18
х=18-23
х=-5
3) -31-х=-9
-х=-9+31
-х= 22 |(-1)
х=-22

Answer 2

1)x=5.21-9.14
x=-3,93
2)х=18-23
х=-5
3)-х=-9+31
-х=22
х=-22

Answer 3

Зенг