a + c = 327

4a + 1.50c = 978

Equation 1 is in the correct format.

Equation 2 is in the correct format.

4 * (a+c=327) --> 4a + 4c = 1308

1 * (4a+1.50c=978) --> 4a + 1.5c = 978

4a + 4c = 1308 - (4a + 1.5c = 978)

-(4a + 1.5c = 978)

4c - 1.5c = 1308 - 978

2.5c = 330

c = | 330 |

2.5 |

c = 132

1a = 327 - 1c

1a | |

1 |

= |

327 - 1c |

1 |

a = | 327 - 1c |

1 |

a = | 327 - 1(132) |

1 |

a = | 327 - 132 |

1 |

a = | 195 |

1 |

a = 195

- What are the 3 methods to solve a system of 2 equations?
- With the elimination method, what are you trying to eliminate?

CCSS.MATH.CONTENT.8.EE.C.8,CCSS.MATH.CONTENT.8.EE.C.8.B

a = 195

Free Simultaneous Equations Calculator - Solves a system of simultaneous equations with 2 unknowns using the following 3 methods:

1) Substitution Method (Direct Substitution)

2) Elimination Method

3) Cramers Method or Cramers Rule Pick any 3 of the methods to solve the systems of equations 2 equations 2 unknowns

This calculator has 2 inputs.

1) Substitution Method (Direct Substitution)

2) Elimination Method

3) Cramers Method or Cramers Rule Pick any 3 of the methods to solve the systems of equations 2 equations 2 unknowns

This calculator has 2 inputs.

- cramers rule
- an explicit formula for the solution of a system of linear equations with as many equations as unknowns
- eliminate
- to remove, to get rid of or put an end to
- equation
- a statement declaring two mathematical expressions are equal
- simultaneous equations
- two or more algebraic equations that share variables
- substitute
- to put in the place of another. To replace one value with another
- unknown
- a number or value we do not know
- variable
- Alphabetic character representing a number

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