3 years ago

What is the value of x?

Mathematics

2 answers:

Alinara [238K]3 years ago

6 0

Answer:

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, but we can work out its value if we try! A variable doesn't have to be "x", it could be "y", "w" or any letter, name or symbol.

Damm [24]3 years ago

3 0

Answer:

Step-by-step explanation:

45 + 2x - 5 = 180

2x + 40 = 180

2x = 140

x = 70

2(70) - 5 = 140 - 5 = 135

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