Study Guide: Two Step Equations (Fractions and Decimals)

7.5x - 9.15 = 47.1

• x = 48.75

• x = -7.8

• x = -63.75

• x = 7.5

Tags

CCSS.7.EE.B.4A

-11.55 = 3.5y + 8.05

• y = -5.6

• y = -1

• y = 2.77

• y = 5.43

Tags

CCSS.7.EE.B.4A

 $\frac{1}{4}r\ +5\ \frac{4}{5}\ =\ \frac{7}{8}$  

•  $r\ =-20\frac{3}{10}$  

•  $r\ =26\frac{7}{10}$  

•  $r\ =\frac{1}{4}$  

•  $r\ =-2\frac{1}{3}$  

Tags

CCSS.7.EE.B.4A

 $-2\frac{3}{6}-7\frac{1}{3}=-27\frac{1}{3}$  

•  $y\ =\ 34\frac{2}{3}$  

•  $y=\frac{-5}{6}$  

•  $y=8$  

•  $y\ =\ -5$  

Tags

CCSS.8.EE.C.7B

 $14\frac{2}{9}=5x\ -\ \frac{7}{9}$  

•  $x\ =\ -10$  

•  $x\ =3$  

•  $y\ =2\ \frac{31}{45}$  

•  $y\ =\ -3\frac{1}{3}$  

Tags

CCSS.7.EE.B.4A

-8d - 120 = -100

• d = -2.5

• d = 3.55

• d = -27.5

• d = 2.13

Tags

CCSS.7.EE.B.4A

-50 = 12c - (- 4)

• c = -3.83

• c = 6.75

• c = -4.5

• c = -15.5

Tags

CCSS.7.EE.B.4A

2.4 - 3.25b = 12.15

• b = -3

• b = 10

• b = 4.47

• b = -5.66

Tags

CCSS.7.EE.B.4A

Did the person solving this equation make a mistake?

• Yes, they were supposed to multiply by 6.77

• yes, they were supposed to subtract 9

• yes, they should have gotten r = -4.65

• no, they did not make a mistake

Tags

CCSS.HSA.REI.A.1