Question

please answer my question I will mark them as Brainlist ​

Answer 1

$if \: \: \: \: \: \: \frac{a}{b} = \frac{c}{d} \\ \\ so \: \: \: a = c \: \: \: \: \: \: \: \: \: \: \: \: and \: \: \: \: \: \: \: \: \: \: \: \: b \: = d \: \\ \\ now \: \: \: \: \: \: \: \: \frac{3a + 4c}{3b + 4d} = \frac{4a + 3c}{4b + 3d} \\ \\ \frac{3c + 4c}{3d + 4d} = \frac{4c + 3c}{4d + 3d} \\ \\ \frac{7c}{7d} = \frac{7c}{7d} \\ \\ \frac{7c}{7c} = \frac{7d}{7d} \\ \\ 1 = 1$

L.H.S. = R.H.S.

I hope this will be help you

Answer 2

Answer:

Given:-

• a/b=c/d .

Show that

• 3a+4c/3b+4d=4a+3c/4b+3d .

Step-by-step explanation:

=>L.H.S.

=>3a+4c/3b+4d .

putting value of given ratios infront of them.

=>3c+4c/3d+4d .

=>7c+7d .

=>c/d .

=>R.H.S.

=>4a+3c/4b+3d .

Again, same here.

=>4c+3c/4d+3d .

=>7c/7d .

=> c/d .

So, L.H.S.=R.H.S.