Question

1.) What is the sum of 4x - 9y, 6x + 10, and 8y - 4?

2.) Simplify the expression 6x + 9y - 15 + 2x - 9y + 8 when x = 4 and y= -3

3.) What is the difference when the sum of 7x + 5y and x - 8y is subtracted from 6x + 14y?

4.) What is the product of 2p(3p + q + 7r).

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Answer 1

See the image attached. I hope it helps you!

Answer 2

Answer:

1)4x-9y+6x+10+8y-4

10x-1y+6

2)I put values directly

6(4)+9(-3)-15+2(4)-9(-3)+8

10-27-15+8+27+8

11 where 27 and -27 cancelled each other

3)7x +5y+x-8y -(6x+14y)

8x-3y-6x-14y

2x-17y

4)I write directly

6p²+2pq+14pr