You need to get the r by itself on one side, with the constants (numbers without the r) on the other side.
Answer:
a = 4
Step-by-step explanation:
1. Expand
2. Simplfy
3. Add 5a to both sides.
4. Simplify again
5. Add 33 to both sides.
6. Divide both sides by nine
7. Switch the sides up.
Answer:
1/6
Step-by-step explanation:
I think it is:
0.5/(0.5+2.5) = 0.5/3 = 1/6
Just divide 216 by 8. 216÷8=27.
8 times

= 216
90*345=
31050
Hope i helped.