55-8-х=7 (410-х):5+70=120 помогите(. Created by ManglAnimatronic. matematika-ru

55-8-х=7 (410-х):5+70=120 помогите(...

July 2022 2 8 Report

55-8-х=7
(410-х):5+70=120
помогите(

aniaivanova19 55-8-х=7
47-х=7
47-7=х
40=х или
55-8-х=7
47-х=7
-х=7-47
-х=-40 (домножаем на -1)
х=40
(410-х):5+70=120
(410-х):5=120-70
(410-х):5=60
410-х=60*5
410-х=300
-х=300-410
-х=-110(домножаем на -1)
х=110

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typick99 55-8-x=7
47-x=7
x=47-7
x=40
(410-x):5+70=120
(410-x):5=120-70
(410-x):5=50
410:5-x:5=50
82-x:5=50
-x:5=50-82
-x:5=-32
x=32*5
x=160

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Answers & Comments

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