Math, asked by bittu825763, 11 months ago

Example 5 :
If a = 3x - 5y, b = 6x + 3y and c = 2y - 4x.
Find : (i) a + b -c, (ii) 2a - 3b + 4C
Solution :

Answers

Answered by gmanasa81

3

Answer:

a+b-c=13x-4y

2a-3b+4c=-28x-11y

Step-by-step explanation:

a+b+c=3x-5y+6x+3y-2y+4x

=9x+4x-5y+y

=13x-4y.

2a-3b+4c=2(3x-5y)-3(6x+3y)+4(2y-4x)

=6x-10y-18x-9y+8y-16x

=-28x-11y

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