Solve for x
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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.
Step-by-step explanation:
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Step-by-step explanation:
(×-5)-5×=×+8×10+15
(×-5)-4×=95
×-4×=95-5
×-4×=90
3×=90
×90/3
×=30
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