Question

The sum of 15 and x is equal to the difference between 19 and 45. What is the value of x?

Answer 1

15 + x = 19 - 45
15 + x = -26
15 - 15 + x = -26 - 15
x =  -41

Explanation: 
write it as an algebraic expression
simplify the right side of the equation
then you should subtract fifteen from both sides -15
x should equal -41

Answer 2

it is -11 because when u get the expression which is 15+x=-26 15 becomes -15 and you subtract -26 and -15 and u will get -11