SOLUTION: im a parent trying to help my son figure out the process of getting to the right answer for this equation, 9b+6-5b=18 then the teacher shows b=3 i did the problem just like the ex

Question 630700: im a parent trying to help my son figure out the process of getting to the right answer for this equation, 9b+6-5b=18 then the teacher shows b=3 i did the problem just like the example but can't figure out where the 3 comes from i was able to see how the answer for the example came about. Another equation is 2y-7+y=8 please help so i can explain to my son thanks
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
im a parent trying to help my son figure out the process of getting to the right answer for this equation, 9b+6-5b=18 then the teacher shows b=3 i did the problem just like the example but can't figure out where the 3 comes from i was able to see how the answer for the example came about. Another equation is 2y-7+y=8 please help so i can explain to my son thanks
.
9b+6-5b=18
combining b's on the left:
4b+6=18
subtracting 6 from both sides:
4b+6-6=18-6
4b=12
dividing both sides by 4:
(4b)/4 = 12/4
b = 3
.
2y-7+y=8
combining y's on the left:
3y-7=8
add 7 to both sides:
3y-7+7=8+7
3y=15
dividing both sides by 3:
(3y)/3=15/3
y = 5

RELATED QUESTIONS
I'm trying to figure out this problem to help my son with his homework. Write the... (answered by ikleyn,josgarithmetic,jim_thompson5910)

Im trying to help my son, but I cant figure it out. Please Help. Find two consecutive... (answered by checkley71)

I'm trying to help my son with geometry and can't figure out this problem. Can you... (answered by Alan3354)

Help - I'm a mom trying to help my son with his pre-algebra. The Prentice Hall book... (answered by ichudov)

im trying to figure out this equation y=f(x)=2300(1.4 to the x power) (answered by solver91311)

I'm trying to figure out how to factor 8a^2+6ab-5b^2 i have the equation for a perfect... (answered by josgarithmetic)

What is the answer to this question?... A= 15cm, B= 20cm? Im trying to figure out letter... (answered by jim_thompson5910)

I am trying to help a friend with an algebra problem and am coming out with one answer,... (answered by Alan3354)

evaluate the expression 6-[3.5+2.(3-2)] the answer im getting is -15 the answer the... (answered by MathTherapy)