Adding 6 to triple a number gives 21

Mathematics

2 answers:

ivolga24 [154]3 years ago

7 0

Step-by-step explanation:

Let the required number be x.

$\therefore \: 3x + 6 = 21 \\$

inna [77]3 years ago

3 0

3x+6=21 x would equal 5 because 3 x 5 = 15 and 15 + 6 = 21! answer: 5

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