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

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

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

Comments

164 + 256 = 420 420 = 420

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280 - 120 = 600 - 440 160 = 160

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70 + 30 = 20 = 80 100 =100