Question

(a) 3(r + s) + 4(r + s)

(b) (3 – y) - 3 (y -x-2)

Answer 1

Answer:

a)7r+7s. b)9-4y+x

Step-by-step explanation:

a) 3(r+s) + 4(r+s)

=(3r+3s)+(4r+4s)

=3r+3s+4r+4s

=3r+4r+3s+4s

=7r+7s

b)(3-y) - 3(y-x-2)

=3-y - 3y+x+6

=3+6-y-3y+x.

=9-4y+x. (-y-3y=-y+(-3y) = -4y)