Question

I struggle with, what is x, or the questions with any letter in, can somebody help me?

Answer 1

An X is a variable, like y, or a, or p, s, w, or any other letter. A variable is used to represent any unknown value in an equation

Answer 2

Explanation:

always remember this

`2x + 2y - 9`

here x and y are variables means that they may change value of these 2

x and y are also unknown values which means we should find these values

2 and 2 are co efficient (A number used to multiply a variable)

9 is constant and it's value doesn't change

example

x+y=2

see this equation

it say that there is 2 unknown number which we add up we get 2

so now x=2-y

putting in x+y=2( value of x)

so we get 2-y+y=2

2=2

1 (this is value of x)

now value of y

put in x+y=2 (value of x)

1+y=2

y=2-1

y=1

so now put in x+y=2 value of x and y

1+1=2

I HOPE YOU WILL UNDERSTAND