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3 years ago

15

PLSS HELP IF YOU TURLY KNOW THISS

2 answers:

dangina [55]3 years ago

6 0

Answer:

$\frac{0.3x - 2.1}{3} = 0.4 \\ 0.3x - 2.1 = 0.4 \times 3 \\ 0.3x - 2.1 = 0.12 \\ 0.3 x = 0.12 + 2.1 \\ 0.3x = 2.22 \\ x = \frac{2.22}{0.3} \\ x = 7.4$

ollegr [7]3 years ago

5 0

Answer:

$\frac{0.3x - 2.1}{3} = 0.4 \\ 0.3x - 2.1 = 0.4 \times 3 \\ 0.3x - 2.1 = 1.2 \\ 0.3x = 1.2 + 2.1 \\ 0.3x = 3.3 \\ x = \frac{3.3}{0.3} \\ \boxed{x = 11}$

<u>x = 11</u> is the right answer.

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