khajija khajija

18-09-2019
Mathematics

contestada

find the value of 7 Y if 3 bracket Y - 1 bracket is equal 21

Respuesta :

Estellia Estellia

19-09-2019

Answer:

[tex]7y = 56[/tex]

Step-by-step explanation:

[tex]3(y - 1) = 21[/tex]

Divide 3 on both sides:

[tex]y - 1 = 7[/tex]

Add 1 to both sides:

[tex]y = 8[/tex]

Multiply by 7 on both sides:

[tex]7y = 56[/tex]

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