Combining Like Terms

Combining Like Terms on Opposite Sides

By Ashten Elmore

Multiple Choice

Solve:

$$5x+10x-5=100$$  

• x = 15

• x = 10

• x = 7

• x = 6.333

Problem #1

2x + 10 = 7x - 5​

Problem #2

9n - 6 = 5n + 18​

Multiple Choice

$$7x+3=2x+13$$  

• x = 3

• x = 2

• x = -3

• x = 4

Multiple Choice

$$2x-3=x+4$$  

• x = 1

• x = -7

• x = 7

• x = 1/3

When combining like terms...

SAME side (of equal sign)... ADD (+) terms together

​

OPPOSITE sides (of equal sign)... OPPOSITE operations​

Problem #2

2n + 9n - 6 = 5n + 18​

Multiple Choice

$$2n=−5n+4n+15$$  

• n = 5

• n = 2

• n = 4

• n = -5

Multiple Choice

$$5m−4=m+4+m+4$$  

• m = 5

• m = -4

• m = 6

• m = 4

Multiple Choice

5x - 4 + 2x = 3

• 1

• 2

• 3

• 4

Multiple Choice

-15 +2a = 5a +12 + 6

• -11

• -3

• 10

• 7

Multiple Choice

Solve the equation: 3x - x + 2 = 8x - 4

• x = 7

• x = 1

• x = -1

• x = -3

Poll

How confident do you feel in being able to solve a multi-step equation?

• Very Confident

• Somewhat confident

• Not that confident

• I'm lost