Answer:
x = 2.5
Step-by-step explanation:
It's pretty simple because all you're doing is doing the reverse order of operations. PEMDAS is as follows: parenthesis, exponents, multiplication, division, addition, and subtraction. So, if we knew what x was equal to but not the answer (38) then we would first add x and 7 together (which is inside parenthesis), then we would multiply that by 4. So if we knew x but not the answer (38), the equation would look like this:
4(2.5 + 7)=?
Then we would solve that using PEMDAS.
But we have to find x, so we do the reverse order of operations to "undo" the equation which will find x. So, here is the math for that:
4(x+7)=38
4(x+7) / 4 = 38 / 4
x+7 = 9.5
x + 7 - 7 = 9.5 - 7
x = 2.5
Ez pz
