Step-by-step explanation:
First get x on its own:
Subtract 3 from each side
y - 3 = 2x
Divide through by 2
y/2 - 3/2 = x
or x = y/2 - 3/2
Now simply switch labels: x↔y
y = x/2 - 3/2
Answer:
That would be 2/9
Step-by-step explanation:
8/9 divided by 4/9 would equal 2
(2b^4)^(-1)=1/(2b^4)
^(-1) basically means reciprocal
Which ever expression is 3x + 21 + 10 ..... 21 + 10 = 31 .... So it'll be 3x + 31 .