Question

Simplify the following.
(i) 9x - (4x + 3x) (ii) 2a – (3a-9a)
(iii) (7b+ 3b) - (11b + 2b)
(iv) (18xy + 5) – (9xy – 10)
plz tell the answer with solution​

Answer 1

Answer:

I) ans 9x - ( 4x+3x)

=9x-7x=2x

ii) ans 2a - 3a+6a= 8a

iii) ans 10 b - 13 b = - 3 b

iv) ans 9xy+15

Answer 2

Solution :-

(i) $\sf{9x - (4x + 3x) }$

= 9x - 4x - 3x

= 5x - 3x

$\pink{\sf{\fbox{ = 2x}}}$

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(ii) $\sf{ 2a - (3a-9a) }$

= 2a - 3a + 9a

= -a + 9a

$\blue{\sf{\fbox{ = 8a}}}$

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(iii) $\sf{ (7b+ 3b) - (11b + 2b) }$

= 10b - 13b

$\red{\sf{\fbox{ = -3b}}}$

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(iv) $\sf{ (18xy + 5) - (9xy - 10) }$

= 18xy + 5 - 9xy + 10

= (18 - 9)xy + 5 + 10

$\green{\sf{\fbox{ = 9xy + 15}}}$