«подобных слагаемых» 1) 4h – 8f + 2f – 12h; 2) 3h – (– 2 + h) - 12; 3) - (– 45k + 1) – 2(30k + 5); 4) x + 2 - (7x – 1 – (x + 1) 3d + 5a – 4d + a; 2) 3(x – 5) – 7(x + 1); 3) 2(x – y) + 2(2x – 3y); 4) -3x + (5 – (2x – 1) 5a – 4b + 6a + 3b; 2) 7(5 – y) + 3(y - 7); 3) 4(3a – c) - (5a – 2c); 4) 4 + x - (2x + (x –

1)=-8h-6f
2)=3h+2-h-12=2h-10
3)=45k-1-60k-10= -15k-11
4)=x+2-7x+1-x-2=-7x+1

1)=-d+6a
2)3x-15-7x-7=-4x-22
3)=2x-2y+4x-6y=6x-8y
4)=-3x+(5-2x+2)=-3x+5-2x+2= -5x+7
 
1)=11a-b
2)=35-7y+3y-21=14-4y
3)12a-4c-5a+2c=7a-2c
4)=4+x-(2x+x-3)=4+x-2x-x+3= -2x+7