Equations with Variables

9+2a=-3-4a

• a = -2
• a = 2
• a = 5
• a = -1

2a+4=7+a

• a = 1
• a = -3
• a = -1
• a = 3

is 7 a solution to the equation

3x+8-x=5x-4

• yes

• no

2+14a=-8+9a

• a = 2
• a = -2
• a = ⁶⁄₅
• a = 1

-8-5a=12-9a

• a = 5
• a = 1
• a = -2
• a = -1

22+2a=37+6+a

• a = 21
• a = 5
• a = -5
• a = -16

3a-24=-a

• a = 6
• a = 12
• a = -8
• a = -12

8-3a+12=2a

• a = 4
• a = 1
• a = 3
• a = 5

6a+3-4a=9

• a = 3
• a = 6
• a = 9
• a = -3

What is the first step you should take to solve this problem?

1 + 4n - 6n = 1 - 8n

• subtract 8n to both sides

• multiply 6n to both sides

• combine the like terms 4n and -6n