When a number is trebled and 5 times the number is subtracted,the result is 3.7, what is the number?
How did the negative cross the equal to sign.
solving it gives n=-1.85
3 n - 5 n = 3.7
2 n = -3.7
n = -3.7/2
3 n - 5 n = 3.7
2 n = -3.7
n = -3.7/2
3a-5a=3.7
2a=-3.7
Divide both side by 2
a=-3.7/2
a=-1.85
3×a-5×a=3.7
3a-5a=3.7
-2a=3.7
-2a/-2=3.7/-2
a=1.85
3a-5a=3.7
-2a=3.7
-2a/-2=3.7/-2
a=1.85
To find the number, we need to set up an equation based on the given information.
Let's assume the number is 'x'.
According to the problem, when the number is trebled (which means multiplied by 3), and 5 times the number is subtracted from it, the result is 3.7.
So, the equation becomes:
3x - 5x = 3.7
Now, we can simplify the equation:
-2x = 3.7
To isolate 'x', we need to divide both sides of the equation by -2:
x = 3.7 / -2
Calculating the division:
x ≈ -1.85
Therefore, the number is approximately -1.85.