Question

help?
solve for x.
-3x+8y=5
6x-2y=10

Answer 1

A. x= 5/2
B. x=15/7
C. x=10/7
D. x=5/7

Answer 2

@Reaper534 @KamiBug

Answer 3

Looks like the substitution method should work. Try getting "y" on one side by itself by adding terms to or subtracting terms from both sides.

Answer 4

I'll get you started. Take the first equation:
\[-3x+8y =5\]
Add 3x to both sides:
\[8y =5 + 3x\]
Then divide both sides by 8:
\[y =\frac{5 + 3x}{8}\]
Now, plug this value for y into the second equation and solve for x.

Answer 5

which value?

Answer 6

@agent0smith

Answer 7

Plug (5 + 3x)/8 in where y occurs in the second equation (6x - 2y = 10).

Answer 8

so 10= (5+3x)/8

Answer 9

wouls A be correct?

Answer 10

-3x+8y=5
6x-2y=10

easiest way is to to use elimination... multiply the second equation by 4 and add them together

Answer 11

how do i multiply it?

Answer 12

multiply everything by 4

Answer 13

I just guessed because my time was over I put C as an answer :/

Answer 14

sorry i wasn't online! =(

Answer 15

its ok!