Answer:x=3
Step-by-step explanation:
-5x=-15
divide by -5
x=3
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The first equation is 
(Equation 1)
The second equation is
(Equation 2)
Putting the value of x from equation 1 in equation 2.
we get,


by simplifying the given equation,


Using discriminant formula,


Now the formula for solution 'x' of quadratic equation is given by:


Hence, these are the required solutions.
30% because as a decimal it would be written as .30 and that is greater then .03