8th Grade Algebra Unit Revision

Which of these are like terms in the following expression:3x + 7 - 9x + 24y + 2x2

Which of these are like terms in the following expression:3x + 7 - 9x + 24y + 2x2

3x, -9x

Simplify by combining like terms:5a + 2b - 3a + 4

2a + 2b + 4

X+X+X+X+X

5x

a + a + a + a

4a

2r + 2 + 5r - 2 + r

8r

y + x + y + y + x

2x + 3y

6x + 1 + 7x

13x + 1

2(4 + 9w)

8+18w

7(y+9)

7y+63

2(4X-7)

8x - 14

Simplify the expression: 2x + 1 + 7x

9x + 1

What does 3^2 mean?

3 x 3

Simplify by combining like terms:5a + 2b - 3a + 4

2a + 2b + 4

-4x - 10x

-14x

5x + 3y + 5 + 4x + 3y + y + 8

9x + 7y + 13

Identify Like Terms4r+2-6+2r

4r, 2r

True or False: u3and u2 are like terms

False

Which one is the variable?3w + 2w - (-7w)

w

What is the coefficient in the following expression?5x - 95

5