Question

use elimination method to solve system of equation a+8b=17 and a+3b=2 would it be no solutions, many solutions or one solution i must give ordered pair Please help thanks

Answer 1

would it look like this?
a+8b=17
-(a+3b=2)= -a-3b+-2 you then subtract a+8b=17
-a-3b=-2
is that right so far?

Answer 2

@Hero

Answer 3

would it look like this?
a+8b=17
-(a+3b=2)= -a-3b+-2 you then subtract a+8b=17
-a-3b=-2
is that right so far @Hero

Answer 4

is this the answer (11,-3) @Hero

Answer 5

@JamesJ can you please help me?

Answer 6

a + 8b = 17
- (a + 3b = 2)
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0a + 5b = 15
5b = 15, solve for b. Then use the value of b in one of the equations to find a.

(11,-3) is not correct.

Answer 7

is the answer (7,3) and thank you so much for your help @whpalmer4

Answer 8

You're half right. Check your answer in the first equation:
a+8b = 17
7+8(3) = 17?

Answer 9

show your work for finding a, maybe we can spot where you went wrong...

Answer 10

were did you get the 7 from? @whpalmer4

Answer 11

a+8(3)=17
a+24=17
a-24=-24
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a=-7 thats what i got @whpalmer4

Answer 12

@whpalmer4 is that the right answer? (-7,3)

Answer 13

Let's check it:
-7 + 8(3) = 17
-7 + 3(3) = 2
both solutions work in both equations, so the answer is correct! good job!