Thursday

December 18, 2014

December 18, 2014

Posted by **shanquessa** on Tuesday, November 4, 2008 at 1:18pm.

x+12y=68

x=8y-12

x+3y=7

2x-4y=24

3a+b=3

2a-5b=-15

-6=3x-6y

4x=4+5y

- math -
**drwls**, Tuesday, November 4, 2008 at 2:44pmI'll do one for you. They all work the same way. You need the practice doing them yourself.

Substitute 8y - 12 for x in the first equation.

8y - 12 + 12y = 68

20 y = 80

y = 4

x = 8y - 12 = 32 - 12 = 20

**Answer this Question**

**Related Questions**

Algebra - Hi. I am having some problems with substitution method and i just can'...

Algebra - Hi. I am having some problems with substitution method and i just can'...

Algebra II - Solve the given system by using a substitution method 9x-2y=3 3x-6=...

Pre-algebra - I have some practice problems, and I need to have them worked out...

Pre-algebra - I have some practice problems, and I need to have them worked out...

Math - How do I solve these problems, I really need help. Solve by substitution ...

algebra - use the Substitution Method. Please give it a try. y = 3x + 4 5x + 3y...

Algebra - Can someone show me step by step how to do this problem to have an ...

math 098 - I made 3 f's on my tests in math 098, do you think i need to withdraw...

algebra - Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution ...