metoo91 metoo91

08-03-2019
Mathematics

contestada

0.456=-0.3(7n-31.2)

what is the variable?

Respuesta :

Ammimochi Ammimochi

08-03-2019

Rewrite the equation as;

-0.3(7n - 31.2) = 0.456

Divide each term by 0.3 and simplify;

-7n + 31.2 = 1.52

Move all terms not containing n to the right side of the equation;

-7n = -29.68

Divide each term by -7 and simplify;

n = 4.24

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