Реши уравнения 240 : Х = 80 280- а = 190 291+ а = 652 70 * Х = 490. Created by marinakeit. matematika-ru

Реши уравнения 240 : Х = 80 280- а = 190 291+ а = 652 70 * Х = 490...

АлискаКиска22 240: 3 =80
280- 90 =190
291+ 359 =652
70* 7 =490

2 votes Thanks 2

Алиса8913 240：x=80
x=240:80
x=3
240:3=80
80=80

280-a=190
a=280-190
a=90
280-90=190
190=190

291+a=652
a=652-291
a=361
291+361=652
652=652

70*x=490
x=490:70
x=7
70*7=490
490=490

5 votes Thanks 6

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