Question

Determină numărul x din egalitatea: [(3×x-17):5+10]×7=777
VA ROOG REPEDE DAU COROANA

Answer 1

[ ( 3 × x - 17 ) : 5 + 10 ] × 7 = 777

( 3 × x - 17 ) : 5 + 10 = 777 : 7

( 3 × x - 17 ) : 5 + 10 = 111

( 3 × x - 17 ) : 5 = 111 - 10

( 3 × x - 17 ) : 5 = 101

3 × x - 17 = 101 × 5

3 × x - 17 = 505

3 × x = 505 + 17

3 × x = 522

x = 522 : 3

x = 174