Thursday

April 24, 2014

April 24, 2014

Posted by **DJ** on Friday, January 20, 2012 at 9:11pm.

7x+8y =44

x=41-5y

- Math question -
**Patty**, Friday, January 20, 2012 at 9:58pm7 x 41-5y+8y=44

287+3y=44

3y=-287+44

3y=-243

y=-243 divided by 3

y=81

- Patty is incorrect - Math question -
**Reiny**, Friday, January 20, 2012 at 11:08pmPatty should have used brackets

in 7x + 8y = 44

7(41-5y) + 8y = 44

287 - 35y + 8y = 44

-27y = -243

y = 9

then in x= 41-5y

x = 41-45

x = -4

so x=-4 and y = 9

**Related Questions**

Substitution Method-Plz help - Use the Substitution method to solve the system ...

Linear Equations - Can you please help solve this equation using the ...

substitution method - Solve by substitution method please help me solve this. I ...

Algerbra 1 substitution method - im really confused about this question: 2x-3y=...

math substitution method - use the substitution method to solve 7x+5y=-26 x=28-...

Math - 1. Explain the advantages and disadvantages of both the substitution ...

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

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

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...