Question

(700•a+200)-600=1000

(7200-а•200)+2000=3400

(y:4-35)•120=3000

(50•y+160)-60=500

Answer 1

1)(700*a+200)-600=1000
700a-400-1000=0
700a-1400=0
700a=1400
a=2

2)(7200-а*200)+2000=3400
9200-200a-3400=0
5800-200a=0
-200a=-5800
200a=5800
a=29

3)((y/4)-35)*120=3000
30y-4200-3000=0
30y-7200=0
30y=7200
y=240

4)(50*y+160)-60=500
50y+100-500=0
50y-400=0
50y=400
y=8

Answer 2

я поняд

Answer 3

700*a=700a

Answer 4

аа понял

Answer 5

спс

Answer 6

да не за что