Question

solve this linear equation

Answer 1

n/2 - 3n/4+ 5n/6 = 21
take lcm
6n/12-9n/12+10n/12=21
7n/12=21
7n=21*12
n=21*12/7
n=36

Answer 2

n/2 - 3n/4 + 5n/6 = 21
lcm of 2,4nd 6 is 12
so, 6n-9n + 10n /12 = 21
= 7n/12 = 21
7n = 21×12
n= 21×12/7
n= 36
hope it helps