Question

Add: i) 2mn, -4mn, 8mn, -6mn

ii) a + b – 1, b – a + 1, 1 – 2b

iii) 4x²y, -3x²y, -7xy², 7xy²

please answer

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Answer 1

Step-by-step explanation:

i)= 2mn+(-4mn)+8mn+(-6mn)

2mn-4mn+8mn-6mn

2mn+8mn-4mn-6mn

10mn-10mn

0 Ans

ii)=a+b-1+b-a+1+1-2b

a-a+b+b-2b-1+1+1

0+0+1

1 Ans

ii)4x^2y+(-3x^2y)+(-7x^2y)+7x^2y

11x^2y-10x^2y

x^2y Ans