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- which you solve for x.

can you do this with every single substitution problem?

after multiplying should i get 17x=43?

8x + 12y = 4
9x - 12y = 30 adding:-
17x = 35

I made an error in my first post - the second equation is multiplied by 3 not -3

34?

sorry 34

thanks alot

i have alot more questions would you mind answering

yw
- i dont know ehat wrong with me this morning - i keep on doing typos!!

I have about 10 minutes so i can help with some

for this would you do the same and multiply line one by four and line two by 6

is the correct asnwer 1

- that would eliminate y and you need to find y

- but you could do it that way - find x first - then y using substitution

ohhhh that makes sense but is the answer positive 1

lets see
91x - 42y = 140
91x + 52y = 234
add
8y = 374

not sure if thats right - dont trust myself this morning

the options were negative or positive one

oh
i;ll recheck

ah - can you see my deliberate mistake ( lol 1)

since the 2 terms in x are positive you need to multiply first by 13 and the second by -7 not 7

91x - 42y = 140
-91x -52y = -234
add
- 94y = -94
y = 1

hope i've helped
gotta go