Question

плиз в столбик
1)17n-11n-2n=511
2)23a-8a-13a=33
3)4x+6x-x=21‚6
4)7y-y+3y=61‚2

Answer 1

1) 4n=511 n=511/4=127.75
2) 2a=33 a=33/2=16.5
3) 9x=21.6 x=21.6/9=2.4
4) 9y=61.2 y=61.2/9=6.8