7letters22 7letters22

31-07-2019
Mathematics

contestada

when 7 times a number is increased by 5 the result is 54 find the number .

A : 2
B : 7
C : 5
D : 12

Respuesta :

victoriaclark victoriaclark

31-07-2019

Answer is B you take 7 times 7 and then add 5

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reynoldsrichard reynoldsrichard

31-07-2019

[tex]7 \times a + 5 = 54 \\ 7a + 5 - 5 = 54 - 5 \\ 7a = 49 \\ \frac{7a}{7} = \frac{49}{7} \\ a = 7[/tex]

"a" represents the unknown value.

hope that helped!

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