Solve 5.2*0.8-6.9div3-2.91=

$$5.2 \times 0.8 - 6.9 \div 3 - 2.91 =$$

Evaluate

$$-1.05$$

Solution Steps

Multiply 5.2 and 0.8 to get 4.16.

$$4.16-\frac{6.9}{3}-2.91$$

Expand \frac{6.9}{3} by multiplying both numerator and the denominator by 10.

$$4.16-\frac{69}{30}-2.91$$

Reduce the fraction \frac{69}{30} to lowest terms by extracting and canceling out 3.

$$4.16-\frac{23}{10}-2.91$$

Convert decimal number 4.16 to fraction \frac{416}{100}. Reduce the fraction \frac{416}{100} to lowest terms by extracting and canceling out 4.

$$\frac{104}{25}-\frac{23}{10}-2.91$$

Least common multiple of 25 and 10 is 50. Convert \frac{104}{25} and \frac{23}{10} to fractions with denominator 50.

$$\frac{208}{50}-\frac{115}{50}-2.91$$

Since \frac{208}{50} and \frac{115}{50} have the same denominator, subtract them by subtracting their numerators.

$$\frac{208-115}{50}-2.91$$

Subtract 115 from 208 to get 93.

$$\frac{93}{50}-2.91$$

Convert decimal number 2.91 to fraction \frac{291}{100}.

$$\frac{93}{50}-\frac{291}{100}$$

Least common multiple of 50 and 100 is 100. Convert \frac{93}{50} and \frac{291}{100} to fractions with denominator 100.

$$\frac{186}{100}-\frac{291}{100}$$

Since \frac{186}{100} and \frac{291}{100} have the same denominator, subtract them by subtracting their numerators.

$$\frac{186-291}{100}$$

Subtract 291 from 186 to get -105.

$$\frac{-105}{100}$$

Reduce the fraction \frac{-105}{100} to lowest terms by extracting and canceling out 5.

$$-\frac{21}{20}$$

Factor

$$-1.05$$