ashleyprescot05
10.03.2021 •
Mathematics
What is the solution to this system? Solve by substitution. y= 4x +3 and 2x - 3y = 21
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Ответ:
x= -3
y= -9
Step-by-step explanation:
Y-4X =3 ; 2x-3y=21
Y= 3+ 4x
2x -3( 3+4x)= 21
2x- 9- 12x= 21
-10x -9= 21
-10x -9+9= 21+9
-10x = 30
X= 30/-10= -3
Y= 3+4x = 3+ 4* (-3)= 3-12= -9
Ответ:
Ответ:
decimal form- .25
fraction form- 1/4
Hope this helps :)