Algebra: Difference between revisions

Algebra (view source)

311 bytes removed , 29 February

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-=== Cross-multiplying to solve for <math>x  </math> when <math>x  </math> is a denominator (bottom of a fraction) ===
+=== Cross-multiplying ===
-==== numerator ====
+* use cross-multiplication to solve for <math>x  </math> when <math>x  </math> is a denominator (bottom of a fraction)
-* numerator is at the top of the fraction
+* see for numerators and denominators
-<math>\frac {numerator} 2  </math>
-* the numerator represents the number being divided by another number
-* i.e., <math>\frac {numerator} 2  </math> = the same as saying,  '''<math>{numerator} \div 2  </math>'''
-==== denominator ====
-* the denominator is at the bottom of the fraction
-<math>\frac 2 {denominator}  </math>
-* the denominator represents the number dividing into the other number
-* .e., <math>\frac 2 {denominator} </math> = the same as saying,  '''<math>2 \div {numerator}   </math>'''
 ==== How to solve for <math>x  </math> when <math>x  </math> is a denominator: "Cross-multiplication" ====
 {| style="text-align: center;"
-|+Using Cross-Multipliclation
+|+Using Cross-Multiplication
 !<math>\frac 6 x = 8  </math>
 !is the same as
@@ Line 229: / Line 213: @@
 |-
 |
+|now we can solve for <math>x</math>
 |
-|
+|-
+|<math>8x= 6 \times 1  </math>
+|<math>8x= 16  </math><math>\frac {8\times x} 8 = \frac {16} 8  </math><math>x = \frac {16} 8
+  </math>
+|<math>x=2
+  </math>
 |}
 [[Category:Math]]