Question

Add the following algebraic expressions:
(i) 3a-4b,4a+2b
(ii)5x+2y,-7x+y
(iii)3ab+2bc,-5ab+3bc,2ab-5bc
(iv)2x-10y,9y-12x,x+y
(v)3m-20n,12m-7n,-8m+12n​

Answer 1

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1.) 3a-4b+4a+2b= 3a+4a+2b-4b=7a-2b

2.)5x+2y-7x+y=5x-7x+2y+y=-2x+3y

3.) 3ab+2bc-5ab+3bc+2ab-5bc=3ab-5ab+2ab+2bc+3bc-5bc=0 ab +0 bc = 0

4.) 3m-20n+12m-7n-8m+12n=3m+12m-8m-20n-7n+12n=7m-15n

5.) (3m -20n)+(12m-7n)+(-8m+12n)(3m+12m-8m)+(- 20n-7n+12n)(15m-8m)+(-27n+12n)7m-15n.

Answer 2

Answer:

( I) 7a- 2b (ii) -2x + 3y (iii) 0 (IV) 9x (v) 7m- 15n