1)3*(5m-4n)-4*(3m-2n)=
2)0,6*(x+7)-0,5(x-3)=
3) 0,3*(x-2)-0,2(x+4)=
4)0,5*(x-3)-0,6(x+4)=​​

1. 15m-12n-12m+8n=3m-4n

2. 0.6x+4.2-0.5x+1.5=0.1x+5.7

3. 0.3x-0.6-0.2x-0.8=0.1x-1.4

4. 0.5x-1.5 -0.6x -2.4=-0.1x-3.9