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Question

Find the sum of each of the following expressions:

a) 4a + 6b + 5c , -3a - 9b , a+ 3b - 4c

b) p + 2q - 4r , 2p - 3q + 5r , 3p - q + 2r

c) 5x - 4y , 6y - 7z , 3z - 4x

d) 9p + 12q - 3r - 4s , -8q + 4s , -7p + q + 2r , p+ 4r - 5s

Subtract

a) a - 2b + 6c from 3a + 3b - 4c

b) 2q - 3r - s from p - 4q - 6r

c) 8a - 3b + 5c - 2d from 10a - b - 4c - 6d

d) 7p + 6q - 5r from 10p - 7q + 8r

Fastest and correct answer gets 10 points !!

Answer 1

A) 4a-3a+a+6b-9b+3b+5c-4c

    2a+c

B)p+2p+3p+2q-3q-q-4r+5r+2r

      6p-2q+3r

C)5x-4x-4y+6y-7z+3z

      x+2y-4z

D)9p-7p+1p+12q-8q+1q-3r+2r+4r-4s+4s-5s

     3p+5q+3r-5s

Subtract

A)3a-a+3b+2b-4c-6c

    2a+5b-10c

B)p-4q-2q-6r+3r+s

   p-6q-3r+s

C)10a-8a-b+3b-4c-5c-6d+2d

     2a+2b-9c-4d

D)10p-7p-7q-6q+8r+5r

    3p-13q+13r

Answer 2

Find the sum of each of the following expressions:

a) 4a + 6b + 5c , -3a - 9b , a+ 3b - 4c = 2a + c

b) p + 2q - 4r , 2p - 3q + 5r , 3p - q + 2r = 6p - 2q + 3r

c) 5x - 4y , 6y - 7z , 3z - 4x = x + 2y - 4z

d) 9p + 12q - 3r - 4s , -8q + 4s , -7p + q + 2r , p+ 4r - 5s = 3p + 5q + 3r - 5s

Subtract

a) a - 2b + 6c from 3a + 3b - 4c = 2a + b + 2c

b) 2q - 3r - s from p - 4q - 6r = p -2q -9r - s

c) 8a - 3b + 5c - 2d from 10a - b - 4c - 6d = 2a - 4b + c - 8d

d) 7p + 6q - 5r from 10p - 7q + 8r = 3p - q + 3r