Question

(64:8 + 8): b = (28:4+7):7

Answer 1

(64:8+8):b=(28:4+7):7

=(8+8):b=(7+7):7

=16:b=14:7

=16:b=2

b=16:2

b=8

Answer 2

Răspuns: b = 8

Explicație pas cu pas:

( 64 : 8 + 8 ) : b = ( 28 : 4 + 7) : 7

( 8 + 8 ) : b = ( 7 + 7 ) : 7

16 : b = 14 : 7

16 : b = 2

b = 16 : 2

b = 8 -> numarul necunoscut, aflat prin metoda mersului invers