Algebra 1- Lesson 2

1. x - 15 = 30

• x = 15

• x = 40

• x =45

• x = 10

Is this the correct solution? x + 10 = 40, x =50

• True
• False

What justification can you use to explain this step?

• Subtraction Property of Equality

• Addition Property of Equality

• Multiplication Property of Equality

• none of these

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

x - 62 = 123
How should you show your work to isolate the variable and solve the equation?

• Add 62 to each side

• Subtract 62 from each side

• Add 123 to each side

• Multiply each side by 62

• x = 3

• x = 7

• x = 5

• x = 4

Jordan bought a concert ticket for $65. After paying for it, he had $80 left.
➡️ How much money did he have before buying the ticket?

*Please solve, justify and check your solution.

A gaming streamer had 75,000 subscribers last year. This year, they have 130,000 subscribers.
➡️ How many new subscribers did they gain?

*Please solve, justify and check your solution.

A soccer player had 35 goals at the start of the season. Over the next few games, they scored more goals and now have 52 goals total. How many goals did they score recently?

*Please solve, justify and check your solution.