Solutions to Equations

When x = 6 in the equation
3x = 18
3(6) = 18
18= 18
TRUE OR FALSE?

• TRUE

• FALSE

Tell whether the value of the variable is a solution to the equation:

3x=12; x=4

• yes

• no

• yes

• no

Which equation has x = 5 as the solution?

• x + 15 = 10

• 2x = 5

• 2x = 10

Which equation has w = 8 as the solution?

• 8w= 64

• 16w = 240

• 16 - w = 9

• 4 + w = 10

When x = 5 in the equation
x + 7 = 15
(5) + 7 = 15
12 = 15
TRUE OR FALSE?

• TRUE

• FALSE

When x = 12 in the equation
3a - 14 = 22 
3(  ) - 14 = 22
IS IT TRUE OR FALSE?

• TRUE

• FALSE

Solve.  5n - 4 = 21

• 10

• -5

• 5

• 2

Solve:
3(x - 2) = 18

• 6.7

• 4

• 8

• -4

• A
• B
• C
• D