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prettygirl2204
29.12.2021 •
Mathematics
a/a+2 = 3/5 ,, can someone give me the step by step solution to this? or at least explain it to me :’)
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Ответ:
Hey There!
Let's solve...
if a/b=c/d,then it will be a*d=b*c
Note: * means "×" or multiply
Let's continue...
So final answer is a=3
I hope it is helpful to you...Cheers!___________Ответ:
x = 15
Step-by-step explanation:
Llamaremos x al número que buscamos, entonces:
la mitad de x es x/2, la tercera parte es x/3, y el triple del número es 3*x
De acuerdo al problema :
(x/2 - x/3 ) + 85/2 = 3*x
Esta es una ecuación de primer grado pasamos a resolverla.
( 3*x - 2*x ) /6 + 85/2 = 3*x
x/6 + 85/2 = 3*x
( x + 255)/6 = 3*x
x + 255 = 18*x
17*x = 255
x = 255/17
x = 15