Question

pls answer this I am rllyy confused
also this is lcm and hcf addition and subtraction
for the first one the answer should be 146/40
thank you!​

Answer 1

1.

$\sf{ \frac{10}{8} + \frac{12}{5} }$

$\sf\small{LCM = 8×5 = 40}$

$\sf{ = \frac{10 \times 5}{8 \times 5} + \frac{12 \times 8}{5 \times 8}}$

$\sf{ = \frac{50 + 96}{40}}$

$\sf\pink{=\frac{146}{40}}$

2.

$\frac{4}{8} - \frac{1}{5}$

$\sf \small{LCM = 8 \times 5 = 40}$

$\sf{ = \frac{4 \times 5}{8 \times 5} - \frac{1 \times 8}{5 \times 8} }$

$\sf{ = \frac{20 - 8}{40}}$

$\sf\pink{=\frac{12}{40}}$

Answer 2

Answer:

Step-by-step explanation:

10x5+12x8/40

50+96/40

= 146/40

So the first number answer is 146/40.

Sorry I don't know the answer of number 2nd.