Posted by **Stephanie** on Friday, February 22, 2013 at 9:21pm.

I am confused on how solve this substitution problem

4y+3=3y+x

2x+4y=18

If you can, show work please (:

- Algebra -
**Alex**, Saturday, February 23, 2013 at 7:45am
I am pretty sure this goes like this

4y+3=3y+x (i)

2x+4y=18 (ii)

Rearrange (i) so that x=4y+3-3y

Take (ii) and sub x

it will become 2(4y+3-3y)+4y= 18

2(y+3)+4y =18

2y+6+4y=18

6y+6=18

6y=18-6

6y=12

y=12/6

y=2 (iii)

Now use what you found for y in (iii) and sub in the (ii or i to get x)

lets take (i) 4y+3=3y+x

from (iii) 4(2)+3=3(2)+x

11=6+x

x= 11-6

x=5

let me know if that's clear enough

- Algebra -
**Stephanie**, Saturday, February 23, 2013 at 8:09am
Yes that is thank you so much (:

## Answer This Question

## Related Questions

- Algebra - solve by substitution. Please show all work. -6x+5y=1 6x+4y=10
- Algebra - Solve: 3x-2y=10 2x+3y=-2 Graph: Substitution: Elimination: Show Your ...
- algebra - solve by the substitution method: 8m+n=47 m-5n=52 thank you having ...
- Algebra - Can someone work this out for me? I'm so confused! Solve the system by...
- Math-Algebra - Solve: 3x-2y=10 2x+3y=-2 Graph: Substitution: Elimination: Show ...
- Calculus - I'm a bit confused about the average equations with integration. I ...
- Algebra - Solve the system of equations using substitution. x + 4y = -5 3x - 8y...
- Substitution Method-Plz help - Use the Substitution method to solve the system ...
- Algebra Question - I did a problem and used the substitution method and it took ...
- Algebra 2 - Please help me solve and find the excluded values for this problem. ...

More Related Questions