rileylit13 rileylit13

18-09-2020
Mathematics

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y = −4x + 7
12x + 3y= 21

Respuesta :

5kimmie 5kimmie

18-09-2020

Answer:

x =0 , y=7

Step-by-step explanation:

12x + 3(-4x+7) = 21

12x - 12x + 21 = 21

21 = 21

0=21-21

0=0

therefore x = 0

12(0)+3y =21

3y =21

3y/3=21/3

y=7

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