Solve 1/7*(1.4+2.1+2.8)

$$\frac { 1 } { 7 } \times ( 1.4 + 2.1 + 2.8 )$$

Evaluate

$$0.9$$

Solution Steps

Add 1.4 and 2.1 to get 3.5.

$$\frac{1}{7}\left(3.5+2.8\right)$$

Add 3.5 and 2.8 to get 6.3.

$$\frac{1}{7}\times 6.3$$

Convert decimal number 6.3 to fraction \frac{63}{10}.

$$\frac{1}{7}\times \frac{63}{10}$$

Multiply \frac{1}{7} times \frac{63}{10} by multiplying numerator times numerator and denominator times denominator.

$$\frac{1\times 63}{7\times 10}$$

Do the multiplications in the fraction \frac{1\times 63}{7\times 10}.

$$\frac{63}{70}$$

Reduce the fraction \frac{63}{70} to lowest terms by extracting and canceling out 7.

$$\frac{9}{10}$$

Factor

$$\frac{3 ^ {2}}{2 \cdot 5} = 0.9$$