Question

1440:12:c-20=0 Dau coroană celui care îmi răspunde!

Answer 1

1440:12:c-20=0
120*1/c-20=0
120/c-20=0
120/c=20
120=20c
20c=120
c=120:20
c=6

Answer 2

$1440 \div 12 \div c - 20 = 0 \\ 120 \div c - 20 = 0 \\ 120 \div c = 0 + 20 \\ 120 \div c = 20 \\ c = 120 \div 20 \\ c = 6$