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# Math Dictionary

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### Math Dictionary

1. 1. Math Dictionary #3<br />By: Sabrina and Cienna<br />
2. 2. Equations<br />To solve an equation we always do the opposite operation on both sides.<br />When solving a two-step equation you have to follow the order of operations backwards to find the operation you undo first.<br />Adding- add, sum, more, increase, total, plus<br />Subtracting- minus, difference, decrease, fewer than, less than<br />Multiplying- times, product, of<br />Dividing- divide, quotient, per<br />
3. 3. Inequalities<br />Inequality- a math statement without an equal sign and with a &gt;, &lt;, &gt;, &lt; sign<br />You solve an inequality the same way you solve an equation.<br />You reverse the inequality symbol when you multiply or divide by a negative number.<br />
4. 4. Equations & Inequalities Problem #1<br />X + 24 = 31<br /><ul><li>24 -24</li></ul> X = 7<br /> 7 + 24 = 31<br />
5. 5. Equations & InequalitiesProblem #2<br />-3a = 81<br />-3 -3<br /> A = -27<br />-27 * (-3) = 81<br />
6. 6. Equations & InequalitiesProblem #3<br />2x + 10 = 46<br /> -10 -10<br />2x36<br /> 2 2<br /> X = 18<br /> 18 * 2 = 36<br />36 + 10 = 46<br />
7. 7. Equations & InequalitiesProblem #4<br />Y / 9 = 14<br /> (9)<br /> Y = 126<br />126 / 9 = 14<br />
8. 8. Equations & InequalitiesProblem #5<br />C – 12 = 26<br /> + 12 +12<br /> c = 38<br />38 – 12 = 26<br />
9. 9. Equations & InequalitiesProblem #6<br />-6y &gt; -96<br />-6 -6<br /> Y &gt; 16<br />16 * (-6) = -96<br />
10. 10. Equations & InequalitiesProblem #7<br />X – 14 &lt; 35<br /> + 14 +14<br /> x &lt; 49<br />49 – 14 = 35<br />