1) (7,2-4,5)-(5,5-4,5)= 2) -(3,6-y)+(-y-2,6)= 3) 2,5x-4,2c+6,4c+12x= 4) 3*(-2a+4)-5a= 5)...

Question

1) (7,2-4,5)-(5,5-4,5)=
2) -(3,6-y)+(-y-2,6)=
3) 2,5x-4,2c+6,4c+12x=
4) 3*(-2a+4)-5a=
5) -4x=-24
6) 2y-4=-19-3y

Answer 1

1. =2.7-1=1.7
2. =-3.6+y+y-2.6=-6.2+2y=2(-3.1+y)
3.=14.5x+2.2c
4. =-6a+12-5a=-11a-12
5. x=-24/-4
       x=6
6. 2y+3y=19+4
    5y=23
y=23/5=4.6