a + s = 324

7a + 3s = 1228

Equation 1 is in the correct format.

Equation 2 is in the correct format.

7a + 3s = 1228

7a + 3s - 3s = 1228 - 3s

7a = 1228 - 3s

7a | |

7 |

= |

1228 - 3s |

7 |

a = | 1228 - 3s |

7 |

1(a) + s = 324

1 * ((1228 - 3s)/7) + s = 324

((1228 - 3s)/7) + s = 324

7 * (((1228 - 3s)/7) + s = 324)

7 * (((1228 - 3s)/7) + s = 324)

1228 - 3s + 7s = 2268

-3s + 7s = 2268 - 1228

4s = 1040

4s | |

4 |

= |

1040 |

4 |

s = | 1040 |

4 |

s = 260

1a + 1(260) = 324

1a + 260 = 324

1a = 324 - 260

1a = 64

1a | |

1 |

= |

64 |

1 |

a = | 64 |

1 |

a = 64

a = **64** and s = **260**

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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