5. Solving 1 Step Equations How much does the suitcase weigh in terms of blocks? B=Blocks S=Suitcase Equation: 6B + S = 9B -6B -6B 3B S = What is the weight of the suitcase if each block has a weight of 2lbs. ? S = 3 (2) = 6 lbs.
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10. 1 Step Equation X + 11 = 9 X - 37 = 52 3X = 72 -11 -11 X = -2 3 3 X = 24 1 1 20 + h = 41 17 - s = 27
11. 1 Step Equations Continued… X / 5 = 10 X / 7 = 4 6X = 42 P = 3 / s = 21 2 5 3 4
13. Multi Step Equations 5x 2 = x + 4 Solve: 5x 2 = x + 4 Notice that there are variables on both sides 5x = x + 6 Get rid of the -2 on the left side Simplify 5x = x + 6 Get rid of the x on the right side 4x = 6 Get rid of the coefficient of x 4 4 x = Simplify Simplify + 2 + 2 – x – x
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Notas do Editor
Poll #1: The 3 that is in front of the x is a (a) coefficient, (b) constant, (c) variable, or (d) fraction. Poll #2: The 36 is a (a) coefficient, (b) constant, (c) variable, or (d) fraction. Poll #3: The x is a (a) coefficient, (b) constant, (c) variable, or (d) fraction. Discuss the -1 coefficient on the RHS of the equation. Slide in labels after polls are completed. Discuss equals sign to transition to next slide.
Have students brainstorm scenarios in which trial and error would be tedious.