Question

What is the solution of the following system?

3x + 3y = 10
-9x -9y = -30

Answer 1

rewrite the second one

-3(3x+3y) = -3(10) and divide both sides by -3 so what will get ?

Answer 2

Syed your opinion about this ?

Answer 3

I'm confused

Answer 4

@jhonyy9 is the second one -9?

Answer 5

There are several ways in which you could approach this problem. One would be to DIVIDE all 3 terms in the 2nd equation by 3.

Write the first equation and then below it write the second equation.

Combine like terms. What do you get?

Answer 6

@mathmale 3x + 3y = 10
-3x - 3 = -10
Am I right?

Answer 7

-3x - 3y = -10

Answer 8

yes correct

Answer 9

Now you have 2 equations that are alike except for sign. Add them together. What result do you get? what does that result tell you?

Answer 10

@mathmale no solution?