Seudónimo Seudónimo

20-04-2020
Mathematics

contestada

Solve the following linear system by graphing
4x+5y=10
3x-3y=21

Respuesta :

Anisatunizzati Anisatunizzati

22-04-2020

Answer:

y = 2

x = 5

Step-by-step explanation:

4x + 5y = 10 | ×3 |

3x - 3y = 21 | ×4 |

12x + 15y = 30

12x - 12y = 84

____________--

27y = -54

y = -54/27

y = 2

4x + 5y = 10 | ×3 |

3x - 3y = 21 | ×5 |

12x + 15y = 30

15x - 15y = 105

____________+

27x = 135

x = 135/27

x = 5

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