Answer:
A. 2.50
Step-by-step explanation:
25 ÷ 2 = 12.5
15 - 12.5 = 2.50
Isolate the variable by dividing each side by factors that don't contain the variable.
x = 2 √ 3 , − 2 √ 3
The answer is x=19.
Hope it helps! (:
7(x-1)=70/10
7x-7=7
7x=14
x = 2
The number is 2.
