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Bellringer Solve for x. 1. x – 13 = 17 2. -5 + z = 21 3. 8a = 7 3 4. 𝑦 5 = 1 2 3-3 Using the Properties Together Solving equations using addition, subtraction, multiplication, and division. Use Opposites!! When solving equations you undo an operation (+, -, ÷, x) by using its opposite. Addition (+) OPPOSITE subtraction (-) Multiplication (x) OPPOSITE division (÷) You can always check your answer to see if you are right!!!! Solving two-step equations Goal: Get your variables no one side of the equal sign and the numbers on the other side of the equal sign. Simplify using the inverse of addition or subtraction. Simplify using the inverse of multiplication or division. Examples!! 1. Solve for x 3𝑥 + 4 = 13 Check: 2. Solve for y −5𝑦 + 6 = 16 Check: 3. Solve for x 6𝑥 + 2𝑥 = 15 Check: 4. Solve for y 2 2𝑦 + 3 = 14 Check: Practice: Solve each equation. 1. 9𝑥 + 6 = 51 2. −8𝑦 − 4 = 28 3. 4𝑐 + 3𝑐 = 21 4. 9𝑥 − 4𝑥 = 20 5. 9 = 3(𝑥 + 6) 6. 3𝑎 + 5 𝑎 − 2 = 6 Ticket Out the Door Solve for x. 5x – 25 = 50 Homework Pg. 127-128 1-10 EVEN, 16-26 EVEN, 28-40 EVEN