i am thinking of a number. if you multiply it by 7, then add 15, and finally subtract 3^2 you get 48. write and solve an equation that describes the number (x) that i am thinking of.
how do i find it?
what is x?
Let x be the number.
You multiply that number by 7
SO FAR WE HAVE: 7x
You add 15 to that number
SO FAR WE HAVE: 7x+15
You subtract 3^2 (which is 9) from that number
SO FAR WE HAVE: 7x+15-9
When you do all of that to the number, you get 48
THE FINAL EQUATION IS: 7x+15-9=48
TO SOLVE:
7x+6=48
7x=42
x=6
kk thank you
To find the number you are thinking of, let's break down the process step by step.
1. Multiply the number by 7: 7x
2. Add 15 to the result: 7x + 15
3. Subtract 3^2, which is 9: 7x + 15 - 9
Now, we have the equation: 7x + 15 - 9 = 48
To solve the equation, we'll simplify the left side and bring everything to one side of the equation:
7x + 6 = 48
To isolate x, we'll subtract 6 from both sides:
7x = 48 - 6
7x = 42
Finally, divide both sides by 7 to solve for x:
x = 42 / 7
x = 6
Therefore, the number you were thinking of is 6 (x = 6).