Answer:
Step-by-step explanation:
1) [tex]\frac{5}{7}x = 55\\[/tex]
Multiply both sides by 7,
[tex]7*\frac{5}{7}x=55*7\\[/tex]
[tex]5x = 55 * 7[/tex]
Now divide both sides by 5
[tex]\frac{5}{5}x=\frac{55*7}{5}\\\\x = 11*7\\\\x = 77[/tex]
ANS: x = 77
2) 6x = 1/5
Divide both sides by 6
[tex]\frac{6}{6}x=\frac{1}{5*6}\\\\x = \frac{1}{30}[/tex]
3) 2.17 + x = 5
Subtract 2.17 from both sides
2.17 - 2.17 +x = 5 - 2.17
x = 2.83
[tex]4) \frac{20}{3}=\frac{10}{9}x[/tex]
Multiply both sides by 9
[tex]\frac{20}{3}*9=\frac{10}{9}x*9\\\\20*3=10x\\[/tex]
Divide both sides by 10
[tex]\frac{20*3}{10}= \frac{10}{10}x\\\\2*3 = x\\\\x = 6[/tex]
