n + 1/2 = 1 3/4 ; n adalah.... pakai cara

jawab

n + 1/2  = 1 3/4

n + 1/2   = 7/4 ....kali 4

4n + 2 = 7

4n = 5

n = 5/4

[tex]n + \frac{1}{2} = \frac{7}{4} \\ n = \frac{7}{4} - \frac{1 \times 2}{2 \times 2} = \frac{7 - 2}{4} \\ = \frac{5 }{4} \ = 1 \frac{1}{4} [/tex]