Question

help solve using the elimination method
5u + 2u = -17
3u + v = -8

Answer 1

Is the question typed correctly? I mean for the first equation 5u + 2u = -17

Answer 2

multiply first by 3 & second by 5

Answer 3

it can be 5u+2v=-17

Answer 4

the question should be 5u + 2v = -17

Answer 5

k then subtract first eq from 2:)

Answer 6

follow my or @Callisto step 1 by 1:)

Answer 7

Okay, the simpler way to do it is to multiply the second equation by 2. Then subtract (1) by (2)
That is
5u + 2v = -17 -(1)
3u + v = -8 -(2)

(2)x2 - (1)
2( 3u + v ) - (5u + 2v) = 2(-8) - (-17)

Answer 8

yes right

Answer 9

got it @marie52 ????

Answer 10

yes! Thanks!

Answer 11

yw:)