Question

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

Answer 1

do you know how to work simultaneous equations?

Answer 2

not really, can you show me with different numbers?

Answer 3

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

Answer 4

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.

Answer 5

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

Answer 6

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

Answer 7

3y=10+3x?

Answer 8

oops 3y=10-3x

Answer 9

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

Answer 10

-3x?

Answer 11

-3.3x?

Answer 12

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

Answer 13

understand?

Answer 14

yes is that the answer to both of the problems?

Answer 15

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

Answer 16

substitute what?

Answer 17

i will give a medal to anyone who responds with explanations