The sum of the numerator and the denominator of the certain fraction is equal to 4,140. When the fraction was reduced, the result was 7/13 . What was the original fraction?

numerator = 1449 denominator = 2691

Step-by-step explanation:

let numerator = n, denominator = d

n/d = 7/13

or n = 7d/13 (i)

again, n+d = 4140

or 7d/13 +d = 4140 [substituting the value in (i)]

or 20d/13 = 4140

or d = 2691

n = 4140 - 2691 = 1449

answer: 7

step-by-step explanation:

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.