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2 years ago

(0.3d-1.5)/3 1/3=0.84:7/15

Mathematics

1 answer:

Anika [276]2 years ago

4 0

Answer:

d = 25

Step-by-step explanation:

Perhaps you want to solve for d:

(0.3d -1.5)/(3 1/3) = 0.84/(7/15)

Change the division by a fraction to multiplication by its inverse.

(0.3d -1.5)·(3/10) = (0.84)·(15/7)

0.09d -0.45 = 1.8 . . . . . . . . . . . . simplify

d - 5 = 20 . . . . . . . . . . . . . . . . . . divide by 0.09

d = 25 . . . . . . . . . . . . . . . . . . . . . add 5

_____

Grouping symbols help show what is being divided by what. Especially where mixed numbers are involved, parentheses help show that the number 3 1/3 is not supposed to be interpreted as the product of 3 and 1/3.

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