Question

What is the value of
a = ?
b = ?
c = ?

Answer 1

Answer:

Step-by-step explanation:

Given,

a-b+c=77( given in first horizontal line )

a+b-c=103 ( given in first vertical line )

By elimination method,

            a-b+c=77   .................................(1)

            a+b-c=103   ................................(2)

          -    -  +   -

Signs will be changed when we do this or from that method.

  A  is cancelled , -b-b=-2b , c+c=2c

            In right hand side 77-103= -26

So,

   -2b+2c=-26

we take minus 2 common in left hand side.

so, - 2 (b-c) = -26

    b-c = -26/-2

    b-c= 13

SEE FIRST VERTICAL LINE,

       a+b-c=103

       a+13=103 ( b-c=13 )

        a=103-13

        a =  90

SEE SECOND HORIZONTAL LINE

             b+a-c=103

 SEE SECOND VERTICAL LINE

            b-a+a=18

            b=18

See equation no (1)

      90-18+c=77

      72+c=77

       c=77-72

        c=5

So,

  a=90

  b=18

  c=5

This question is for 10th + Standards

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Answer 2

Answer:

HOLA

UR ANSWER IS

A = 90

B= 18

C = 5

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SOLVE IT BY EQUATION ...