greenlollipop3 greenlollipop3

20-11-2018
Mathematics

contestada

PLEASE HELP!!!

Solve.

a - 2b = 2
a + b = 2 ( b + 3 )

Respuesta :

beyondcrazz beyondcrazz

20-11-2018

a-2b=2.........(1)

a+b=2(b+3)

a+b=2b+6

a-b=6.......(2)

a-2b= 2

a-b= 6

Eliminate y

multiply (1)by -1

Multiply (2) by 2

-a+2b=-2

2a-2b=12

Add the two equations

a = 10

plug value of a in (1)

1a +-2b=2

10+-2b=2

-2b =2

-2b =-8

b=4.00

Hope this helped:)

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