1)a-(4,6+2a)=? 2)-(2b+3,7)+(-2,6+3b)=? 3)3(x+2y)-2(-4y+3,6)=? 4)(-6)(-2x+7)-7(x-4)=?

Question

1)a-(4,6+2a)=? 2)-(2b+3,7)+(-2,6+3b)=? 3)3(x+2y)-2(-4y+3,6)=? 4)(-6)(-2x+7)-7(x-4)=?

Answer 1

1) а-4,6-2а=-а-4,6

2) -2b-3.7-2.6+3b=b-6.3

3) 3x+6y+8y-7.2=3x+14y-7.2

4) 12x-42-7x+28=5x-14