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# One Step Equations

## on Jun 03, 2010

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posted at classroom.jc-schools.net/ce/algebravest.ppt

posted at classroom.jc-schools.net/ce/algebravest.ppt

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• Comment goes here.
Are you sure you want to
• You must subtract the same number from what you want to be moved. The idea is keep the variable alone by doing the opposite.
• Add the opposite sign of the number you want to move.
• When solving multiplication equations, you divide both sides by the number attached to the variable. Be sure to use the same sign.
• Multiply both sides by the reciprocal. You must keep the sign of the fraction with the variable.

## One Step EquationsPresentation Transcript

• One step equations Add Subtract Multiply Divide
• X + 5 = -9
• X + 5 - 5 = -9 -5
• X = -14
• -6 + X = -4
• -6 + 6 + X = -4 + 6
• X = 2
• Try the following on your paper.
• 10 = X + 3
• 5 + X = 9
• 6 = 3 + X
• X = 7
• X = 4
• X = 3
• Equations with subtraction
• X - 5 = 8
• X - 5 + 5 = 8 +5
• X = 13
• 5 - X = 6
• 5 - 5 + X = 6 - 5
• X = 1
• Try the following on your paper.
• X - 7 = -1
• X - 4 = 66
• 8 = X - 2
• -8 = X - 2
• X = 6
• X = 70
• X = 10
• X = -6
• Multiplication of Equations
• 3X = -9
• 3X /3 = -9 /3
• X = -3
• -5X = -40
• -5X /-5 = -40 /-5
• X = 8
• Try these on your paper.
• 4X = -16
• -1X = 9
• 6 = 5X
• 12X = 3
• X = -4
• X = -9
• X = 6/5
• X = 1/4
• Division of Equations
• 1/2X = 4
• (2/1) 1/2X = 4 (2)
• X = 8
• -3/4X = 6
• (-4/3) (-3/4)X = 6 (-4/3)
• X = -8
• Try these on your paper.
• X/3 = 9
• -X/4 = 7
• 1/3X = -1
• 4 = X/4
• X = 27
• X = -28
• X = -3
• X = 16