3 years ago

What is the elimination of 2a+3b=12 and 5a-b=13

Mathematics

2 answers:

Anton [14]3 years ago

7 0

2a plus 3b =12

5a minus 1b =13 multiply this by -3 to match 3b in equation 1

2a plus 3b =12

-15 plus 3b =-36

plus 15 plus 15

3b= -21

divide by 3 on both sides

b= -7

baherus [9]3 years ago

6 0

I hope this helps you

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3 years ago

What is the answer to -8x-9>-21

dybincka [34]

<h3>:- Solution</h3>

-8x - 9 > -21

Move -9 to right side

-8x > -21 + 9

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x < -12/-8

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the answer to -8x - 9 > -21 is x < 3/2

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