Question

A+B-C=170, C+A=130, What is B=?

Answer 1

Answer:

HELLO

A+B-C= 170

C+A = 130

C= 130- A

A+B-C =170

A+B =170+C

A+B = 170+130-A

A+B = 300-A

2A+B = 300

A+B= 300/2

A+B = 150

A+B-C= 170

A+B = 170+C

150 = 170 +C

C = 20

A+C =130

A+ 20= 130

A= 110

A+B = 150

110+B= 150

B = 150-110

B= 40..

A = 110, B= 40, C=20..

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