Answer:
a = 8
b = -2
c = 12
Step-by-step explanation:
a + a + b = 14
2a + b = 14 ⇒ ( 1 )
b + b + c = 8
2b + c = 8 ⇒ ( 2 )
a + b + c = 18 ⇒ ( 3 )
First, let us make a as the subject in equation 1.
2a + b = 14
2a = 14 - b
⇒ ( 4 )
Let us make c as the subject in equation 2.
2b + c = 8
c = 8 - 2b ⇒ ( 5 )
Now it is clear for us that, we can replace a & c with ( 7 - b / 2 ) & ( 8 - 2b ) respectively.
<u>And now let us solve the equation 3 to find the</u><u> value of b.</u>
<u>And now let us find the </u><u>value of a</u>
<em>For that, let us use the equation 1. There, we can replace b with ( -2 ) to find the value of a.</em>
<u>Now, let us find the</u><u> value of c.</u>
<em>For that, let us take the equation 2. There also, we can replace b with -2 to find the value of c.</em>