Question

1) 6m+m-35=21;
2) 17n+14n-145=134;
3) 5n+9n+32=200;
4) (x+57): 7=12;
5) (161-y): 16=9;
6) 112 : (17+x)=4​

Answer 1

1) 6m+m-35=21

6m+m=56

m(6+1)=56

m= 56/7

m=8

2) 17n+14n-145=134

17n+14n=279

n(17+14)=279

n=279/31

n=9

3) 5n+9n+32=200

5n+9n= 168

n(5+9)=168

n= 168/14

n=12

4) (x+ 57):7=12

x+57=84

x=84-57=27

5) (161-y):16=9

161-y=144

y=161-144=17

6) 112:(17+x)=4

17+x=28

x=28-17=11