Wednesday

July 23, 2014

July 23, 2014

Posted by **confused** on Thursday, May 24, 2007 at 9:16pm.

my problem is -3x+2y=7

x+4y=-7

how do I do this? please help

No. The sign < or> does not include equal. On computers we often just do this => for equal or greater than. or this: >=.

In texts, it is often this way: ≥

Your problem. Multiply the second equation by 3, then add the equations.

-3x+2y=7

3x+12y=-21

adding...

0x +14y=-14

solve for y, then go back substuting in y, and solve for x.

Your problem. Multiply the second equation by 3, then add the equations.

-3x+2y=7

3x+12y=-21

adding...

0x +14y=-14

solve for y, then go back substuting in y, and solve for x.

thank you for your help it is very helpful to me.

**Related Questions**

algebra - Hey , can anyone help me out please? i'm really confused with this ...

Math (Algebra 1) - ok, we are learning about simplifying radical equations and I...

Math - Can someone please help me with an algebra problem? -|4-8b|=12 I really ...

math - Can somebody please help me with this problem? This is the index-„³ 5 6^-...

Algebra - find the indicated sum not sure how to type the sigma sign, but here ...

Algebra - I do not the correct steps to solve for this problem. I know I have to...

Math - Find the integrals. (show steps) (integral sign) xe^(4x^2) I think this ...

Algebra - Could someone please help me find x in this problem and explain how ...

pre-algebra - Use an inequality to solve the problem. A shopkeeper is making a ...

Algebra - 6x²y³ + 9x²y³ 15x²y³ ------------- = ---------- 3x²y² 3x²y² = (15/3...