Question

Реши уравнения: 1) х + 256 = 420 2) х - 120 = 600 - 440 3) х + 30 = 20 + 80

Answer 1

1)х+256=420
х=420-256
х=164
2)х-120=600-440
х=160+120
х=280
3)х+30=20+80
х=100-30
х=70

Answer 2

164 + 256 = 420 420 = 420

Answer 3

280 - 120 = 600 - 440 160 = 160

Answer 4

70 + 30 = 20 = 80 100 =100