if A = 2x - 4y - 3
B = -5x + 6y + 9
C = 3x - 7y + 1
solve
A + B - C
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Answer:
Therefore the value for A + B - C is 9y-6x+5
Step-by-step explanation:
In the Question we are given that
A = 2x - 4y - 3
B = -5x + 6y + 9
C = 3x - 7y + 1
Now to find the value of A+B-C we need to add the three equations given to us
so that will become
A+B+C
= (2x-4y-3) +(-5x+6y+9)-(3x-7y+1)
= 2x-4y-3 - 5x+6y+9-3x+7y-1
= (2x- 5x-3x) +(-4y+6y+7y)+(-3+9-1)
=-6x +(9y) +5
= 9y-6x+5
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