please explain I really need help thank you please explain write an expression equivalent to x - 3y + 4

To get an equivalent expression, we need to write the equation in such a way that we can get the original expression. SInce the expression doesn't have an equal to sign, we will rewrite the expression.

Original expression: x - 3y + 4

Rewritting the expression, we can make the y come before the x term or make the constant (4) come before either the x or the y term.

Or we can leave the expression as it is.

making the y come before the x term and the constant respectively:

-3y + x + 4

making the constant come before the y and x term respectively:

4 + x - 3y

leaving the expression as it is:

x - 3y + 4

Also note we can multiply or divide the expression by 1. It will still be the same:

Multiplying: 1(x - 3y + 4)

Dividing: (x - 3y + 4)/1

Any of the above is an equivalent expression to x - 3y + 4

Let's pick: -3y + x + 4