Answer:
You have to work backwards here
so if you had 100 dollars left and u spent 50 on a radio
100+50=150
Then You spent a 1/6 of it on stationery
So you mustve had 5/6 money left or 150 dollars
so you multiply that to find that
5/6=150/x
5x=900
x=180
so add 30 dolalrs to 150 and you have 180.
the you spent a third
you repeat the same process
the you have ur ANSWER
easy the answer is
Step-by-step explanation:
-2 + 7x = 12
+2 +2
7x + 14
14 / 7x = 2
=13
=2^2+2×2+5
=4+4+5
=8+5
a. 20
just multiply 5 and $4 by 4