Question

can ANYONE help me:/
5x+4y=6
-2x-3y=-1

Answer 1

simplifying linear equations!

Answer 2

You have a "system" of linear equations. Are you wanting a solution for x and y?

Answer 3

yes.

Answer 4

The two most common methods of solving something like this is the "substitution method" or the "elimination" method, which method you prefer?

Answer 5

whichever would be easier, but usually substitution.

Answer 6

I think the elimination method is easier, but substitution works ok too. What do you want to substitute the x or y?

Answer 7

ok then I'd rather do elimination. (:

Answer 8

in that case, distribute a 2 through 5x+4y=6. distribute a 5 to -2x-3y=-1

Answer 9

OK, multiply the first equation (all terms by 2 and follow that by multiplying the second equation by 5 (all terms) doing so, will get you the following:
10x+8y=12
-10x-15y=-5
Did you get that also?

Answer 10

yes i did

Answer 11

ok. so 2(5x+4y=6) would be 10x+8y=12. and 5(-2x-3y=-1) would be -10x-15y=-5

Answer 12

Ok add the two equations and you will only have y left, you have eliminated the X
-7y=7

y=-1 real simple wasn't it?

Answer 13

then line em up. 10x-10x cancels out. 8y-15y is -7y and 12-5 is 7. -7y=7, y=-1

Answer 14

yes! thank you both

Answer 15

Now that you have found y, just plug it in either of the two first equations and solve for x.

Answer 16

so that is 5x=10 and x=2

Answer 17

hope it helps