It looks like you missed a few parentheses. The way you currently have it written looks like this:
Looking at that, you can see where you're running into some problems.
Hi there,
Please could anyone help me out with the following:
Make E the subject of the formula:
3 = 7 + 1.52 - E / E
Am I correct in assuming that you need to multiply both sides by E? However when I do that I get a negative value.
Thanks for your help!
Ah ok, apologies it should read: 3 = 7 + (1.52 - E) / E
When solving, I understand that you need to collect the variable on one side however I am having difficulty with the denominator "E" and multiplying through.
3 - 7 = (1.52 - E) / E
-4 = (1.52 - E) / E
Then do I multiply both sides by E to get: -4E = E(1.52 - E) ?
Thanks for the reply!
Starting with
You can multiply both sides (like you said) by E.
Distributing the E on the right side (the left is trivial),
Simplifying,
Now take it from there, and use your understanding of collecting the variables on one side.
Looks good, that's what I got.
You could have also done it your way (looks like you edited your post while I was responding):
Subtract 7 from both sides,
Multiply both sides by E,
Collect the E terms on the left by adding E to both sides,
Divide by -3,