Question

0.3d-1/3 1/3=.84:7/15

Answer 1

Answer:

$d=\frac{147}{6.3}$

Step-by-step explanation:

• The right side is a ratio $0.84:\frac{7}{15}$
• a ratio can be written as a fraction $\frac{0.84}{\frac{7}{15} }$ this means $0.84$ divide by $\frac{7}{15}$ which is the same as $0.84*\frac{15}{7}=\frac{12.6}{7}$
• On the left, change the mixed fraction $3\frac{1}{3}$ to the improper fraction $\frac{10}{3}$
• Then divide $0.3d-1$ by $\frac{10}{3}$ which is same as $(0.3d-1)*\frac{3}{10} =\frac{3(0.3d-1)}{10}$
• So the equation is now $\frac{3(0.3d-1)}{10}=\frac{12.6}{7}$
• Now multiply both sides by 10 and 7:
• $(10)*(7)*\frac{3(0.3d-1)}{10}=\frac{12.6}{7}*(7)*(10)\\7*3(0.3d-1)=12.6*(10)\\21*(0.3d-1)=126\\6.3d-21=126\\6.3d-21+(21)=126+(21)\\6.3d=147\\d=\frac{147}{6.3}$

Answer 2

Answer:

d=147/6.3

Step-by-step explanation:

d = 147 / 6.3