3x + 3y=10
-9x - 9y=-30
solve please!!!!!!!!!!!1

Question

3x + 3y=10
-9x - 9y=-30
solve please!!!!!!!!!!!1

anonymous · Answer

do you know how to work simultaneous equations?

anonymous · Answer

not really, can you show me with different numbers?

anonymous · Answer

no, these will do just fine, make x or y in either one of the equations the subject of the formula

paounn · Answer

Second equation is the first multiplied by -3. They are in fact the same equation, and the system admits infinte^1 solutions. Fix either x or y as t, and solve on the other.

anonymous · Answer

so i will subtract 3x from both sides on the first equation?

anonymous · Answer

yea u r going right, go brave and show me ur final answer!

anonymous · Answer

3y=10+3x?

anonymous · Answer

oops 3y=10-3x

anonymous · Answer

gud! now u want it to be just y on one side so now divide both sides by 3! and give meh ur answer!

anonymous · Answer

-3x?

anonymous · Answer

-3.3x?

anonymous · Answer

u'll get y = 10/3 - x :)

anonymous · Answer

understand?

anonymous · Answer

yes is that the answer to both of the problems?

anonymous · Answer

nope, now u have to substitute it into the other equation

anonymous · Answer

substitute what?

anonymous · Answer

i will give a medal to anyone who responds with explanations