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what's the value of y if :-

3y + 21 = 81​

Sagot :

Answer:

y=20

Step-by-step explanation:

Let's solve your equation step-by-step.

3y+21=81

Step 1: Subtract 21 from both sides.

3y+21−21=81−21

3y=60

Step 2: Divide both sides by 3.

3y/3  60/3

Answer:20

danielafuentes

Answer:

y = 20

Step-by-step explanation:

3y + 21 = 81

    -21      -21         (21 cancels)

3y       =    60

/3               /3              (3 cancels)

         y = 20

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