Respuesta :
Answer:
x=24
Step-by-step explanation:
x/2+3=15
-3 both sides
x/2=15−3
15-3=12
x/2=12
12*2=24
x=24
Answer:
x=2/5=0.400
Step-by-step explanation:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
1/2*x-(3/15)=0
Simplify 1/5
(1/2 * x - 1/5 = 0
Simplify 1/2
Find the Least Common Multiple
The left denominator is : 2
The right denominator is : 5
Least Common Multiple:
10
Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
x * 5 - (2)/10 = 5x - 2/10
When a fraction equals zero ...
Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.
Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.
Here's how:
5x-2/10 * 10 = 0 * 10
Now, on the left hand side, the 10 cancels out the denominator, while, on the right hand side, zero times anything is still zero.
The equation now takes the shape :
5x-2 = 0
Solve : 5x-2 = 0
Add 2 to both sides of the equation :
5x = 2
Divide both sides of the equation by 5:
x = 2/5 = 0.400
hope this helps! -Quentin
