Решите уравнения ! 1). 2•x-267=133. 2). 287+(120-х)=300. 3) 300-78:х=287 4) 750+10•х=750. Created by dospanova. matematika-ru

Решите уравнения ! 1). 2•x-267=133. 2). 287+(120-х)=300. 3) 300-78:х=287 4) 750...

June 2022 2 8 Report

Решите уравнения ! 1). 2•x-267=133.
2). 287+(120-х)=300. 3) 300-78:х=287
4) 750+10•х=750

dyundikmaxim2 1)2х-267=133
2х=133+267
2х=400
х=200
2)287+(120-х)=300
287+120-х=300
-х=300-287-120
-х=-107
х=107
3)300-78:х=287
300х-78=287х
300х-287х=78
13х=78
Х=6
4)750+10х=750
10х=750-750
10х=0
х=0

2 votes Thanks 3

Milanayamaguchi 1)2x-267=133
2x=133+267
2x=400
x=400:2
x=200
Ответ:200

2)287+(120-x)=300
120-x=300-287
120-x=13
-x=13-120
-x=-107
x=107
Ответ:107

3)300-78:x=287
-78:x=287-300
-78:x=-13
x=-78:(-13)
x=6
Ответ:6

0 votes Thanks 2

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