Question

Plz answer this question

Answer 1

尺乇Ɋㄩ丨尺乇ᗪ 卂几丂山乇尺

1... question 4ab + 4b - ab - 8ab - 7b - 5ab

First we need to collect the like terms..

0+4b-7b

= 0-3b

= -3b

2...question. (5y-7)-(3y + 5)=20

= 5y-7-(3y+5)=20

5y-7-3y-5=20

Now collect the like terms

2y-7-5=20

2y-12=20

2y=20+12

2y=32. Divide both sides with 2

y=16