mind logic

Algebra Level 1

if x+y=9 and x=3 find Y

6 solutions

Mohammad Khaza
Jul 31, 2017

$y=9-3=6$ .....................[ $x=3$ ]

We will get the value of 'y' but question is asking for the value of 'Y' so how will we find that?

A Former Brilliant Member - 3 years, 8 months ago

he he he!but i think capital Y and small y doesn't matter here.

but it is a matter of thinking,how will we find Y by calculating y's...........:D

Mohammad Khaza - 3 years, 8 months ago

Please change the 'Y' to 'y'

Algebra is case sensitive.

Thank you.

Marta Reece - 3 years, 1 month ago

Anubhav Chakraborty
Dec 5, 2020

$x$ + $y$ = 9

so 9 - $y$ = x

or 9 - $x$ = y

9 - 3(x) = y= 6

Jona Durand
Jul 24, 2019

$x + y = 9$ and $x = 3$

$3 + y = 9$ | - 3

$y = 6$

B D
Sep 28, 2018

If x + y = 9 x = 3 that means 9 - x(3) = y(6)

Ashish Menon
May 29, 2016

Subctitute x = 3 to obtain $y = \color{#69047E}{\boxed{6}}$ .

Ch Ali
Oct 10, 2014

x+y =9 then 9-3 =6