Lesson 7: Solving Equations with Fractions 6th Grade Practice



1. 2 1/4r=10


A. R= 4 3/4


B. R= 4 2/5


C. R= 4 4/9



2. h/26=5


A. H=120


B. H=123


C. H=140



3. 6/7k=6


A. K=7


B. K=6 6/7


C. K=6


4. 4/5 x for x= 5/8


A.2


B.1/2


C.1/4


5. h÷4/9 for h = 5 1/3

A. 2 10/27


B.10


C.12

Respuesta :

Answer:

1.C

2. 130, answer not listed

3. A

4. B

5.C

Step-by-step explanation:

To solve equations with fractions, convert from a mixed number to an improper fraction then use the inverse. The inverse of a fraction is multiplying by the reciprocal of the fraction on both sides.

1.

[tex]2\frac{1}{4}r=10\\\\\frac{9}{4}r=10\\\\\frac{4}{9} *\frac{9}{4}r=10*\frac{4}{9}\\\\r=\frac{40}{9} \\\\r=4\frac{4}{9}[/tex]

2.

[tex]\frac{h}{26}=5\\\\\frac{26}{1} *\frac{h}{26}=5*\frac{26}{1}\\\\h=130[/tex]

3.

[tex]\frac{6}{7}k=6\\\\\frac{7}{6} *\frac{6}{7}k=6*\frac{7}{6}\\\\k=\frac{42}{6} \\\\k=7[/tex]

4.

[tex]\frac{4}{5}x\\\\\frac{4}{5}*\frac{5}{8}\\\\\frac{20}{40} \\\\\frac{1}{2}[/tex]

5.

[tex]\frac{h}{4/9} \\\\\frac{\frac{16}{3} }{\frac{4}{9} } \\\\\\\frac{\frac{16}{3} *\frac{9}{4}}{\frac{4}{9}*\frac{9}{4}}\\\\\frac{16}{3} *\frac{9}{4}\\\\\\\frac{144}{12} \\\\12[/tex]