Ответ:
- \(2a+3a-(2+3)a-6a=5a-5a-6a=-6a\);
- \(4b+7b=11b\);
- \(5x-2x=3x\);
- \(6p-4p=2p\);
- \(9t+5t=14t\);
- \(3y+y-(3+1)y-9y=4y-4y-9y=-9y\);
- \(6c-c=5c\);
- \(2m-m=m\);
- \(n+3n=4n\);
- \(k+k=2k\);
- \(3x+6x+x=10x\);
- \(8e-e-2e=5e\);
- \(s+s+s-3s=0\);
- \(9a-5a+a=5a\);
- \(z+6z-3z=4z\).
