The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable
Number 4
6=2•6-6
-18=-2•6-6
Answer:
1
Step-by-step explanation:
dgshdbahdbdbsbdbdbdbdbebdbdhdhd
Answer:
8
Step-by-step explanation: