Question

please answer as soon as possible​

Answer 1

$\bf\Large{Solution:}$

a) 3x+9y, -11y

Sum = 3x+9y+(-11y)

= 3x-2y

____________________.

b) -a-3b, 7a-10b

Sum = -a-3b+(7a-10b)

= -a-3b+7a-10b

= 6a-13b

____________________.

c) 13d+5c,-13c+5d

Sum = 13d+5c+(-13c+5d)

= 13d+5c-13c+5d

= -8c+18d

____________________.

d) 7pq-11hk,-3pq-21kh

Sum = 7pq-11hk+(-3pq-21kh)

= 7pq-11hk-3pq-21kh

= 4pq-32hk

____________________.

Answer 2

Answer:

Step-by-step explanation:

3x+9y-11y = 9y-11y = -2y+3x = xy