Question

I need help bad, can someone please help me?
a +7b = 13
a+ 2b = -2
there is on solution it is have to type a order pair.
i got a+7b =13
a+ 2b =-2
a+7b =13
2+2= 4
b= 12?
simply a = 3 ?
can anyone help me?

Answer 1

I will really appreciate if someone can help me?

Answer 2

hmm this is what ied do
a+2b=-2 this means a = -2-b plug this into second and get
-2-2b+7b=13 clean up and get 5b=15 then b=3 can u do the rest?

Answer 3

okay 2b+7b=13 and 5b=15=3 so that mean that the pair are (5b=15, 3) right?

Answer 4

Goten77 showed that b = 3

a +7b = 13

a +7(3) = 13 ... plug in b = 3

a + 21 = 13

a = 13 - 21

a = -8

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or

a+ 2b = -2

a+ 2(3) = -2

a + 6 = -2

a = -2 - 6

a = -8

So either way, we get a = -8

Answer 5

so the solution as an ordered pair is (-8, 3)

Answer 6

why is it u do it so easy and the other person confused me? okay thank you so much, it like 7x 3= 21 then subtract 21 by 13 = -8 thanks

Answer 7

you got it

Answer 8

well i thought u would follow the work....