решите уравнения а)(30142+z):876=49 б) 51815:(p-975)=1205 в)13х+15х-24=60 г)18у-7у-10=12. Created by djonik05. matematika-ru

решите уравнения а)(30142+z):876=49 б) 51815:(p-975)=1205 в)13х+15х-24=60 г)18у-...

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решите уравнения а)(30142+z):876=49 б) 51815:(p-975)=1205 в)13х+15х-24=60 г)18у-7у-10=12

Verified answer

А) 30142 + z = 49*876
30142 + z = 42924
z = 42924 - 30142
z = 12782

б) 51815:(p-975) = 1205
p-975 = 51815:1205
p-975 = 43
p = 43 + 975
p = 1018

в) 13x + 15x - 24 = 60
28x = 60 + 24
28x = 84
x = 84:28
x = 3

г) 18y - 7y - 10 = 12
11y = 10 + 12
11y = 22
y = 22:11
y = 2

1 votes Thanks 2

karinka126 А)(30142+z):876=49
30142+z=876*49
30142+z=42924
z=42924-30142
z=12782

б)51815:(р-975)=1205
р-975=51815:1205
р-975=43
р=975+43
р=1018

в)13х+15х-24=60
28х-24=60
28х=24+60
28х=84
х=84:28
х=3

г)18у-7у-10=12
11у-10=12
11у=10+12
11у=22
у=22:11
у=2

2 votes Thanks 1

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