3d + 8i = 64

9d + 7i = 107

Equation 1 is in the correct format.

Equation 2 is in the correct format.

9 * (3d+8i=64) --> 27d + 72i = 576

3 * (9d+7i=107) --> 27d + 21i = 321

27d + 72i = 576 - (27d + 21i = 321)

-(27d + 21i = 321)

72i - 21i = 576 - 321

51i = 255

i = | 255 |

51 |

i = 5

3d = 64 - 8i

3d | |

3 |

= |

64 - 8i |

3 |

d = | 64 - 8i |

3 |

d = | 64 - 8(5) |

3 |

d = | 64 - 40 |

3 |

d = | 24 |

3 |

d = 8

- 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

d = 8

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

Many such discoveries of mathematical formulas validate the research efforts of those who came before us. If you want to inspire yourself and those around you, try making your own Custom Enamel Badges of achievement for small accomplishments.

These vivid pin badges can be a constant reminder that numbers aren't exactly cold and that they can always be accompanied by fun and hope.

Add This Calculator To Your Website