Answer:
x=-14
Step-by-step explanation:
Open parenthesis first.
5x+15=-55
Then we put all like terms on one side.
5x=-55-15
Simplify.
5x=-70
Then, divide to find x.
x=-14
TIP: Use PEMDAS:
P=parenthesis
E=exponents
M=multiplication
D=division
A=addition
S=subtraction
Hope I helped