Question

!

Answer 1

Help!!!

Answer 2

I tried using the elimination and substitution method

Answer 3

lets do elimination method
1) multiply equation 1 by 3
what you get ?

Answer 4

lets work step by step here :)

Answer 5

I get 9x+12y=210

Answer 6

good!
2)
now multiply equation 2 by 4

Answer 7

You can do that?

Answer 8

yes, you can multiply any number with the equation

Answer 9

just like u multiplied 3 throughout 1st equation

Answer 10

No i meant that you can multiply the equation by a number as many times as you want]

Answer 11

but now you are multiplying 2nd equation with 4

Answer 12

Ok
32x-12x=36

Answer 13

good:)
now add those 2 new equations,
and see what happens ;)

Answer 14

41x=156

Answer 15

adding...
so, 210+36 is ?

Answer 16

I think

Answer 17

how u got 156 ?

Answer 18

Oh sorry i subtracted

Answer 19

no problem :) try again.

Answer 20

no i used 120
sorry

Answer 21

try again ?

Answer 22

246

Answer 23

yes!
so, 41x = 246
x=... ?

Answer 24

6

Answer 25

Thanks for helping!!!!!!!!!!!!

Answer 26

wasn't that easy ? :)

Answer 27

I could of put this in a graphing calc but you taught me something new

Answer 28

most welcome ^_^
oh, and since you are new here,
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Have fun learning with Open Study! :)

Answer 29

I have been here before

Answer 30

okay, so happy learning from your every account :P

Answer 31

Thangks