Question

Solve.

2x + 4 = 8

A. x = 2

B. x = 4

C. x = 6

D. x = 8

Answer 1

2x + 4 = 8

Subtract 4 from each side first.

2x = 4

Divide each side by 2.

2x/2 = 4/2

x = 2

Answer 2

thx

Answer 3

In general, it works best to do the operations in the opposite order of their priority:

PEMDAS
P=parenthese
E=exponentiation
M=multiplication
D=division
A=addition
S=subtraction

So when solving, do the addition and subtraction first, then do the multiplication and division, etc.

That's what you did here — you did the subtraction, then the division

Answer 4

I had in mind to divide everything by 2 first, then the answer is right there