Реши уравнения. 5*х=140-70 200-а=116: 4 630: х=18*5 980-х=45+347+103

5*x=70
x=70:5=14
200-a=116:4
a=200-29=171.
630:x=18*5
x=630:90=7.
980-x=45+347+103
x=980-495=485

5*х=140-70
5*х=70
х=70/5
х=14

200-а=116/4
200-а=29
а=200-29
а=171

630/х=18*5
630/х=90
х=630/90
х=7

980-х=45+347+103
980-х=45+450
980-х=495
х=980-495
х=485