Question

4a+3b+c=-9
a-3b+2c=27
11a-2b+3c=28

Answer 1

c=6
b=-5
a=0

Answer 2

please show me how you got those answers so i can do by myself for next ones

Answer 3

c=-4a-3b-9
a-3b+2c=27
11a-2b+3c=28


Replace all occurrences of c with the solution
solution
The value of a variable that makes an equation true. found by solving the last equation
equation
A mathematical statement that says two expressions have the same value; any number sentence with an = . for c. In this case, the value substituted is -4a-3b-9.

c=-4a-3b-9
a-3b+2(-4a-3b-9)=27
11a-2b+3c=28


Replace all occurrences of c with the solution
solution
The value of a variable that makes an equation true. found by solving the last equation
equation
A mathematical statement that says two expressions have the same value; any number sentence with an = . for c. In this case, the value substituted is -4a-3b-9.

c=-4a-3b-9
a-3b+2(-4a-3b-9)=27
11a-2b+3(-4a-3b-9)=28

Answer 4

totally confused

Answer 5

i have had four different people tell me different but yours is the only one that was verified when i calculate the substitutions

Answer 6

okay, good. So you got it right?

Answer 7

trying to figure out your equation

Answer 8

need help with anything else?

Answer 9

can u plz work that equation step by step so i can understand what it is you did

Answer 10

its too long to work out. I just did it in my head. Ill write it out tomorrow for you. Im going to go to bed now.

Answer 11

ok thank you so much for your help

Answer 12

write above equation in system matrix notation and use cramer rule to solve unknown variables

Answer 13

Got the steps for you, if you dont understand anything please tell me
I kind of rushed it, sry.