Combining Like Terms

Combine like terms: -0.67x + 2.3x = 10

• x = 6.13

• x = 3.36

• x = -3.36

• x = 0.163

Combine like terms: x + 4.6x = 56

• x = -10

• x = 10

• x = 12.17

• x = -15.5

Combine like terms: 12.5x - 4.5x + 8x = 128

• x = 0

• x = 8

• x = 4

• x = 5.12

• x = 50

• x = 9

• x = 4.5

• x = 25

Simplify the expression by COMBINING LIKE TERMS.

Mathematical Equivalence

ON

Simplify:

20y + 19y - 2x + 3x + 2

• 39x + y + 2

• 29y - x + 2

• 39 + 1x

• x + 39y + 2

Simplify:

5x - 6x - 8x + 7

• -9x + 7

• 10x + 7

• 9x + 7

• 9x - 7

• no other like term

To combine like terms in an expression, the terms must have the same ​ ​ (a)   and ​ (b)  

• variable

• exponent

• constant

• coefficients

• coefficient

Nicholas's teacher gave him the final expression "7x+5" and asked him to match this with two correct original expressions given in the list below. Which two original expressions simplify to 7x+5?

• 2x + 1+ 5x + 4

• 10x + 2 - 3x + 3

• x +2 + 4x + 5

• 2x+ 3+ 3x + 4