Answer:
substitute x as 3
Step-by-step explanation:
f (3)=2x
=2×3
=6
Answer: a value is like how much is the pice or like counting money
Step-by-step explanation:
Answer: 3
Explanation: 7.50 - 5.25= 2.25 ÷ .75= 3
9
Step-by-step explanation:
15x+12=19x-24
15x-19x=-24-12
-4x=-36/÷(-4)
x=9
You first put all the x on one side and numbers on the other and be careful about + and - and then you divide by everything with the x so you have only the x left and you get the aswer.
