Question

a+b+c=986 ,b=a+2,b=c÷2 a=?,b=?,c=?​

Answer 1

Răspuns:

a+b+c=986

$b = a + 2$

$b = \frac{c}{2}$

a+a+2+c=986

2a=984-c

$a = \frac{984 - c}{2}$

$\frac{984 - c}{2} + \frac{c}{2} + c = 986$

aici aducem la același numitor

984-c+c+2c=1 972

2c=988

c=494

b=494:2=247

a=

$a = \frac{984 - 494}{2}$

a=490:2=245