Question

(90+×)×4=660
(90+120)×х=1260
Помогите пж

Answer 1

Ответ:

1)(90+ x)×4=660

x=660÷4-90

x=165-90

x=75

_________

(90+75)×4=660

660=660

2)(90+120)× x=1260

x=(90+120)÷1260

x=210÷1260

x=6

________

(90+75)×6=1260

1260=1260

Answer 2

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