If a+b=2x-2 and a-b=4x-8 what is a and b
Answers
Answered by
1
We have
a+b=-4. ....... 1
And
a-b=-32. .........2
Adding equation 1&2
We get a=-18
And from 1 we get. b=14
Answered by
2
A+B = 2x-2 ===============1
A-B= = 4x-8 ==============2
A+B+A-B=2X-2+4X-8 ( -B and +B gets canceled )
2A = 6x -10
A = (6x-10)/2
A=6x/2 -10/2
A = 3x - 5
(3x-5) + B = 2x-2
B = 2x-2-(3x-5)
B = 2x-2-3x+5
B = -x+3
B = 3-x
A-B= = 4x-8 ==============2
A+B+A-B=2X-2+4X-8 ( -B and +B gets canceled )
2A = 6x -10
A = (6x-10)/2
A=6x/2 -10/2
A = 3x - 5
(3x-5) + B = 2x-2
B = 2x-2-(3x-5)
B = 2x-2-3x+5
B = -x+3
B = 3-x
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