dengan caranya y.................

Jawabannya adalah
[tex] \\ \frac{3}{4} + \frac{2}{5} = \frac{15}{20} + \frac{8}{20} = \frac{23}{20} - \frac{1}{8} = \\ \frac{46}{40} - \frac{5}{40} = \frac{41}{40} =1 \frac{1}{40} . [/tex]

SEMOGA MEMBANTU

panjang tali 1 = 3/4 meter
panjang tali 2 = 2/5 meter
panjang tali masing-masing berkurang = 1/8

panjang tali hasil sambungan
= (3/4 - 1/8) + (2/5 - 1/8)
= (30/40 - 5/40) + (16/40 - 5/40)
= 25/40 + 11/40
= 36/40
= 9/10 meter