Решите уравнения (х-21)-18=100 5х+15=75 12х-12=48 (21-х)-18=1 Срочно надо(. Created by sonyasonya060. matematika-ru

Решите уравнения (х-21)-18=100 5х+15=75 12х-12=48 (21-х)-18=1 Срочно надо(...

HappyDay01 1) (х-21)-18=100
х -21 = 100+18
х - 21 = 118
х=118+21
х= 139

2) 5х+15=75
5х=75-15
5х=60
х=60÷5
х=12

3) 12х-12=48
12х= 48+12
12х=60
х=60÷12
х=5

4) (21-х)-18=1
21-х=1+18
21-х=19
х=21-19
х=2

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LaneRT (x-21)=100+18
x-21=118
x=118-21
x=97

5x=75-15
5x=60
x=12

21-x=18+1
21-x=19
x=2

0 votes Thanks 0

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