3(n-5)=21. please tell me sister’s and brothers my exam is coming please tell me​​

Question

3(n-5)=21. please tell me sister’s and brothers my exam is coming please tell me​​

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4 weeks 2021-08-14T19:21:06+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-08-14T19:22:08+00:00

    Equation Given:

    3(n-5)=21

    Step-by-step explanation:

    Step 1:

    3(n - 5) = 21

    step 2:

    3n - 15 = 21

    step 3:

    3n = 21 + 15

    step 4:

    3n = 36

    step 5:

    n =  \frac{36}{3}

    Step 6:

    n = 12✓

    Vertifying:

    3(n-5)=21

    3(125)=21

    3×7=21

    21=21

    Hence vertified

    0
    2021-08-14T19:22:39+00:00

    Answer:

    n = 12

    Step-by-step explanation:

    We are given,

    3(n – 5) = 21

    (n – 5) = 21/3

    n – 5 = 7

    n = 7 + 5

    n = 12

    OR

    3(n – 5) = 21

    3n – 15 = 21

    3n = 21 + 15

    3n = 36

    n = 36/3

    n = 12

    Hence, n = 12

    Hope it helped and you understood it……..All the best

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