3 years ago

What is the solution of the system 3x + 2y =18 Y= -2/3x + 12

Mathematics

2 answers:

Pani-rosa [81]3 years ago

6 0

3x = 18-2y

x= 6 - 2/3y

then substitute in the second equation

Y= -2/3x + 12

y=-2/3(6-2/3y)+12

y= 72/5

then substitute y= 72/5 in the first equation x= 6 - 2/3y

then x = -18/5

laiz [17]3 years ago

4 0

Answer:

3x + 2y =18

 Y= -2/3x + 12

3x + 2(-2/3x+12) = 18

3x + (-4/3x+24) = 18

3x + -1 1/3x +24 =18

1 2/3x +24 = 18

1 2/3x = -6

5/3x = -6

x = -3.75

Step-by-step explanation:

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