Objective: Subtract integers. Solve for the unknown in each equation. 1.–4 + (-3) = a.

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Presentation transcript:

Objective: Subtract integers

Solve for the unknown in each equation. 1.–4 + (-3) = a

Solve for the unknown in each equation. 1.–4 + (-3) = aa = -7

Solve for the unknown in each equation. 1.–4 + (-3) = a 2.b = 2 + (-6)

Solve for the unknown in each equation. 1.–4 + (-3) = a 2.b = 2 + (-6)b = -4

Solve for the unknown in each equation. 1.–4 + (-3) = a 2.b = 2 + (-6) (-6) = c

Solve for the unknown in each equation. 1.–4 + (-3) = a 2.b = 2 + (-6) (-6) = cc = -3

Subtracting Integers To subtract an integer, add its additive inverse.

Example Solve each equation. a.? = 6 – (-4)

Example Solve each equation. a.? = 6 – (-4) ? = 6 – (-4)To subtract –4, add 4

Example Solve each equation. a.? = 6 – (-4) ? = 6 – (-4)To subtract –4, add 4 ? = 6 + 4

Example Solve each equation. a.? = 6 – (-4) ? = 6 – (-4)To subtract –4, add 4 ? = ? = 10

Example Solve each equation. b.(-3) – (-7) = ?

Example Solve each equation. b.(-3) – (-7) = ? (-3) – (-7) = ?To subtract –7, add 7

Example Solve each equation. b.(-3) – (-7) = ? (-3) – (-7) = ?To subtract –7, add 7 (-3) + 7 = ?

Example Solve each equation. b.(-3) – (-7) = ? (-3) – (-7) = ?To subtract –7, add 7 (-3) + 7 = ? 4 = ?

Example Solve each equation. c.(-11) – 5 = u

Example Solve each equation. c.(-11) – 5 = u (-11) – 5 = uTo subtract 5, add –5

Example Solve each equation. c.(-11) – 5 = u (-11) – 5 = uTo subtract 5, add –5 (-11) + (-5) = u

Example Solve each equation. c.(-11) – 5 = u (-11) – 5 = uTo subtract 5, add –5 (-11) + (-5) = u -16 = u

Example Solve each equation. d.x = 13 – 15

Example Solve each equation. d.x = 13 – 15 x = 13 – 15To subtract 15, add –15

Example Solve each equation. d.x = 13 – 15 x = 13 – 15To subtract 15, add –15 x = 13 + (-15)

Example Solve each equation. d.x = 13 – 15 x = 13 – 15To subtract 15, add –15 x = 13 + (-15) x = -2

COMPLETE THE FOLLOWING PROBLEMS: