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BELL WORK. Which pair of equations are NOT equivalent? A. 3( x + 4) = 27 3 x + 12 = 27 B. 5 x + 10 – 3 x = 24 2 x = 34 C. 7( x – 3) = 3( x + 1) 4 x = 24 D. 9 x – 3 + 6 x – 5 = 53 15 x – 8 = 53. HANDS ON EQUATIONS. LESSON 7. ALWAYS REMEMBER….
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BELL WORK Which pair of equations are NOT equivalent? A. 3(x + 4) = 27 3x + 12 = 27 B. 5x + 10 – 3x = 24 2x = 34 C. 7(x – 3) = 3(x + 1) 4x = 24 D. 9x – 3 + 6x – 5 = 53 15x – 8 = 53
HANDS ON EQUATIONS LESSON 7
ALWAYS REMEMBER… • Your equation must stay balanced. Whatever you do on one side, you must do the same thing on the other. • Start by combining like terms on each side of the equal sign. • Make sure to get all of the variables on one side and all of the constants on the other. • Remember to check your work.
PRACTICE SHEET #7 3x + 2x = 10 x = 2
PRACTICE SHEET #7 Do this on your bell work sheet. 4x + 2x = x + x + 20
PRACTICE SHEET #7 3x + 5 = x + 19 x = 7
PRACTICE SHEET #7 Do this on your bell work sheet. 2(3x + 1) = x + 22
PRACTICE SHEET #7 3x = 21 x = 7
PRACTICE SHEET #7 3x = 14 + x x = 7
PRACTICE SHEET #7 4x + 3 = x + 21 x = 6
PRACTICE SHEET #7 Do this on your bell work sheet. 5 + x + 3x – x = 2x + 9 - x
PRACTICE SHEET #7 2(3x + 1) = 8 x = 1
PRACTICE SHEET #7 2(2x + 2) = x + 10 x = 2
PRACTICE SHEET #7 4x + 2x + 1 = 2x – x + 21 x = 4
PRACTICE SHEET #7 Do this on your bell work sheet. 2(2x + 4) – 2x = x + 18
PRACTICE SHEET #7 3x + x – 2x + 8 = 3x + x x = 4
EXIT SLIP Ms. Grayson bought several cans of vegetables at the store today for a total of $9.00. Each can is normally $0.75, but Mrs. Grayson had a coupon for $0.25 off per can. Which equation can be used to find n, the total number of cans of vegetables that Ms. Grayson got for $9.00? A. $0.25(n – $0.75) = $9.00 B. $0.75n – $0.25n = $9.00 C. $0.25n – $0.75 = $9.00 D. $0.75(n – $0.25) = $9.00