Question

Rearranging formulae. Can anyone help me with this question and show how you did it please? Will mark brainliest!

Answer 1

Answer:

$x=-21y+5$

Step-by-step explanation:

Hi there!

$7y=\frac{5-x}{3}$

We can isolate x by performing inverse operations on both sides of the equation and canceling values out.

First, multiply both sides by 3 to cancel 3 out on the right side and isolate 5-x:

$7y*3=\frac{5-x}{3}*3\\21y=5-x$

Now, subtract 5 from both sides to isolate -x:

$21y-5=5-x-5\\21y-5=-x$

Finally, multiply both sides by -1 to change -x to x:

$-21y+5=x\\x=-21y+5$

I hope this helps!

Answer 2

X= 5-21y! hope this helps you