Equivalent Equations

What is the difference between an expression and an equation

• Expressions have an equal sign and equations do not

• Equations have an equal sign and expressions do not

Which of the following are true about an equation?

• Contains an equal sign

• May contain variables

• Has many solutions

• Shows two expressions are equal

Tags

CCSS.7.EE.A.2

CCSS.HSA.SSE.A.2

If 4x=6, then 2x=?

• 2

• 3

• -2

• 6

Tags

CCSS.6.EE.B.7

Solve:
-4x = 24

• 20
• -20
• 6
• -6

Tags

CCSS.6.EE.B.7

The equation equivalent to 2x=4 is

• x=2

• 6x=7

• 2x+3=7

• 2x+3=4

Tags

CCSS.8.EE.C.7A

What equivalent equation would be produced if 7 were added to each side?

• 2x + 10 = 15
• 2x +7 = 10
• 9x +10 = 15
• 2x + 10 = 12

Tags

CCSS.8.EE.C.7A

What equivalent equation would be produced if 2 were subtracted from each side?

• 2x - 1 = 3
• 2x + 5 = 9
• 2x + 1 = 5
• 2x + 1 = 3

Tags

CCSS.7.EE.B.4A

What equivalent equation would be produced if x were subtracted from each side?

• 2x +3  = 5
• x + 3 = 5
• x + 3 = 5 - x
• 2x + 3 = 2 - x

Tags

CCSS.7.EE.B.4A

What equivalent equation would be produced if x were subtracted from each side and 3 were subtracted also?

• 2x  = 5
• x = 5
• x = 2 - x
• x = 1

Tags

CCSS.7.EE.B.4A

What is the first step in solving this equation:
5x + 7 = 12

• Divide by 5
• Subtract 5
• Multiply by 7
• Subtract 7

Tags

CCSS.7.EE.B.4A