How do you write the inequality and solve given "twice a number increased by 3 is less than the number decreased by 4"?
See a solution process below:
To write the inequality we will start by defining "a number" as
Then, "twice a number" can be written as
"increased by 3" becomes:
"is less than" turns it into"
"the number decreased by 4" is:
Putting this together gives the inequality:
To solve, first subtract
Any number less than
Let the number be
Write the left side as maths first:
Now do the same for the right side..
We have the inequality, now solve it: