Isolate the x. Do the opposite of PEMDAS. Note the equal sign, what you do to one side, you do to the other.
First, subtract 8 from both sides
8 (-8) + 7x = -61 (-8)
7x = -69
Next, isolate the x. Divide 7 from both sides
7x/7 = (-69)/7
x = -69/7
x = ~-9.86 (rounded)
hope this helps
We'll be assuming this is with simple interest.
now, a year has 12 months, thus in 18 months there are 18/12 years.

I think the answer is 1,200
(a).
Simplify the expression to obtain the value at missing place.

Blank space: 35
(B).
Simplify the expression to obtain the value of missing place.

Blank space : 7
(C)
Simplify the expression to obtain the value at missing place.

Blank space: 2
"If I ran 1.23 kilometers and ran it another time how much have I ran altogether"
That would mean you ran 1.23 kilometers twice so our equation is 1.23*2 which would be equal to 2.46