Question

21/4 + 7/5 - 23/8 = ?

Answer 1

$\frac{21}{4} + \frac{7}{5} - \frac{23}{8} \\ \\ \\ lcm = 40 \\ \\ \\ = \frac{210 + 56 - 115}{40} \\ \\ \\ = \frac{266 - 115}{40} \\ \\ = \frac{151}{40}$

Answer 2

Answer:

21/4+7/5-23/8

(21×10)+(7×8)-(23×5)/40

210+56-115/40

266-115/40

151/40