Math, asked by NaviBrainly, 6 months ago

Math question, class 8

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Answered by aromalps456
1

Fraction \frac{-3}{7}\approx -0.428571429 can be rewritten as -\frac{3}{7}\approx -0.428571429 by extracting the negative sign.

Multiply \frac{2}{5}=0.4 times -\frac{3}{7}\approx -0.428571429 by multiplying numerator times numerator and denominator times denominator.

Do the multiplications in the fraction \frac{2\left(-3\right)}{5\times 7}\approx -0.171428571.

Fraction \frac{-6}{35}\approx -0.171428571 can be rewritten as -\frac{6}{35}\approx -0.171428571 by extracting the negative sign.

Multiply \frac{1}{6}\approx 0.166666667 times \frac{3}{2}=1.5 by multiplying numerator times numerator and denominator times denominator.

Do the multiplications in the fraction \frac{1\times 3}{6\times 2}=0.25.

Reduce the fraction \frac{3}{12}=0.25 to lowest terms by extracting and canceling out 3.

Least common multiple of 35 and 4 is 140. Convert -\frac{6}{35}\approx -0.171428571 and \frac{1}{4}=0.25 to fractions with denominator 140.

Since -\frac{24}{140}\approx -0.171428571 and \frac{35}{140}=0.25 have the same denominator, subtract them by subtracting their numerators.

Subtract 35 from -24 to get -59.

Multiply \frac{1}{14}\approx 0.071428571 times \frac{2}{5}=0.4 by multiplying numerator times numerator and denominator times denominator.

Do the multiplications in the fraction \frac{1\times 2}{14\times 5}\approx 0.028571429.

Since -\frac{59}{140}\approx -0.421428571 and \frac{4}{140}\approx 0.028571429 have the same denominator, subtract them by subtracting their numerators.

Subtract 4 from -59 to get -63.

Reduce the fraction \frac{-63}{140}\approx -0.45 to lowest terms by extracting and canceling out 7.

-\frac{9}{20}=-0.45

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