Помогите плиииииз 422
1) 48m-20m=252 28m=252 m=9 2)44n+33n=154 77n=154 n=2 3)45/3m=3 15m=3 m=1/5 4)144/(x-3)=36 144/(x-3)=36/1 144*1=(x-3)*36 144/36=x-3 x=7 5)21m/18=7 21m=126 m=6 6)9n*13=351 117n=351 n=3