Solving multi-step Equations

-18 = 3n - 8 + 7n

• n = 6
• n = -1
• n = -15
• n = 11

3-5 = 4a - 7(1 - 5a)

• a = -15
• b = 8
• c = 12
• d = 16

15 + 3 - 2a + 1 = a - 5

• a = 11
• a = 8
• a = 2 
• Many Solutions

-5( 7 + r ) = -3( 5r + 5 )

• r = -4
• r = -15
• r = -6
• r = 2

4x + 2x = 24

• x = 4
• Many Solutions
• No Solution
• x = 5

Simplify each equation. Tell whether the equation has one, no, or infinite solutions.
3x - 8 = 3(x - 4) + 1

• one
• no solutions
• infinite solutions

Simplify each equation. Tell whether the equation has one, no, or infinite solutions.
3x - 7 = 3(x - 3) + 2

• one
• no solutions
• infinite solutions

Clear the equation to solve.

• 1
• 2
• 4.67
• 12

Tags

CCSS.8.EE.C.7B

• 1/3
• 1/5
• 3
• 15

Tags

CCSS.7.EE.B.4A

• 30
• 43
• 46
• 54

Tags

CCSS.7.EE.B.4A