Question

3y + 10 = 34

10y - 15 = 15

25y + 75 = 100

y - 25 = 75

2y - 5 = 25

Answer 1

3y + 10 = 34
3y = 24
y = 8

10y - 15 = 15
10y = 30
y = 3

25y + 75 = 100
25y = 25
y = 1

y - 25 = 75
y = 100

2y - 5 = 25
2y = 30
y = 15

Answer 2

<=>3y+10-10 =34-10
<=>3y=24
<=>3y/3 =24/3
<=>y=8

<=>10y-15+15 =15+15
<=>10y = 30
<=>10/10y =30/10
<=>y = 3

<=>25y+75-75 = 100-75
<=>25y = 25
<=>25/25y =25/25
<=> y =1

<=>y -25+25 = 75+25
<=> y = 100

<=>2y-5+5 = 25+5
<=>2y=30
<=>2y/2 = 30/2
<=> y = 15