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4. Thrice a number a decreased by one is____.
A. 3a-1 B. 1-3a C.(a-1 D.3a >1​


Sagot :

Answer:

A. 3a-1

Step-by-step explanation:

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ANSWER : A

3a-1

Step-by-step explanation:

Thrice a number means multiply 3 times a number

=3xa. But in algebra you don't need to put multiply sign 3a instead

Then decreased word means minus

By 1

Therefore 3a-1