Step-by-step explanation:
start by setting each equation to each other

first we are going to subtract 2x from both side of the equation

now subtract 1 from both sides

now divide by -3 on both sides
Answer:
x = 10.5
Step-by-step explanation:
Work in the screenshots
I used a online calculator
symbolab. com
Answer: The number is 15
Step-by-step explanation: basically the equation you should solve is
(x)+(2x)+(2x+7)=82
5x+7=82
5x= -7+82
5x=75
5/5x=75/5
x=15
4 1/5 because 4+5=9 so 4 then you will have 1/5
0.03571428571428571428571428571429