An
Equation is a mathematical sentence with an equal sign. A Variable is a letter representing a number. |
x = 32 + x = 2 + 3 = 5 |
x = 82x 4
= 416 4
= 4 |

Addition is the inverse of subtraction and vice versa.

Multiplication is the inverse of division and vice versa.

but the numbers (or values) change.

Example: x + 4 = -12 |
Example: d – 8 = -15 |

Example: -4c = 44 |
Example: F8 =
-4 |

Example: Jack Nickles is behind in a golf tournament.
He currently is at – 1 stroke. The leader John Weekly is
at – 8 strokes. What score does Jack need on the last
hole to win the tournament? Write an equation to represent this problem and then solve it. |
The inverse operation is subtraction of – 1 from both sides. j + (-1) – (-1) = (-8) – (-1) j = -7 ? Check: (-7) + (-1) = -8 -8 = -8 |

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