Question

Explain *step by step*

(I have no idea how to do this so a *very detailed* explanation would be very much appreciated)
Extra points given for that effort


2x+7

Answer 1

Explanation:

When finding (x) not relating to a y=mx+b equation, start by setting your equation up to equal zero.

2x+7=0

Next you want to "isolate" the variable (get it by itself) as best as possible. Start by removing your extra number from the side of the equation where x resides. You may do this by opposing its symbol. ALWAYS MAKE SURE TO DO SOMETHING ON BOTH SIDES OF THE EQUAL SYMBOL!!

2x+7=0 -> subtract 7 from each side of the equal symbol so that the value still exists within the equation.

This would show:

(2x+7)-7=0-7

2x=-7

From here you want to continue isolating the variable.

Divide each side of the equal symbol by 2, so that we get rid of the coefficient, and arrive at what x truly equals by itself.

This would show:

2x/2=-7/2

x=
`(-7)/(2)`

In conclusion, the value of x is -7/2 (negative 7 halves)