Question

MEDAL!!!!!

Two equations are given below:

a − 3b = 4
a = b − 2

What is the solution to the set of equations in the form (a, b)?

(−2, −2)
(−3, −1)
(−9, −7)
(−5, −3)

Answer 1

EXPLAIN your answer to plz

Answer 2

a - 3b = 4
a - b = -2
if you subtract these you eliminate a and get an equation in b only

Answer 3

can you do that /

Answer 4

how do i subtract it

Answer 5

a - a = 0 of course
-3b - (-b) = ?
4 - (-2) = ?

Answer 6

@SoaHelp Try putting the points into your equation and see which comes out true :)

Answer 7

can you work these out?

Answer 8

0B
2

Answer 9

you can do it Babyninis way but that won't help you to learn how to solve these type of questions

Answer 10

a − 3b = 4
a = b − 2

What is the solution to the set of equations in the form (a, b)?
a) (-2)-3(-1)=4 true or false?
b) (−3)-3(−1)=4 true or false?

and so on until you find your correct answer! When you find it, plug in the points to the second equation just to double check :)

Answer 11

-3b - (-b) = -3b + b
(the consecutive - sign is same as a +

Answer 12

noo, not the diamonds! :|

Answer 13

im so confused

Answer 14

what is -3b + b ?

Answer 15

3

Answer 16

no you;ve lost the b!

2b + b = 3b
-3b + b = -2b

Answer 17

1

Answer 18

1b