Solving for the variable (pg 53- 58)

 $x\ +24=10$  

Tags

CCSS.6.EE.B.7

 $4x-16=38$  

Tags

CCSS.7.EE.B.4A

 $3=58+5x$  

Tags

CCSS.7.EE.B.4A

 $-5x+13=-12$  

Tags

CCSS.7.EE.B.4A

 $14=\frac{x}{6}+11$  

Tags

CCSS.7.EE.B.4A

 $\frac{x}{15}+7=10$  

Tags

CCSS.7.EE.B.4A

 $\frac{4}{5}x=8$  

Tags

CCSS.6.EE.B.7

 $-\frac{x}{8}+9=-1$  

Tags

CCSS.7.EE.B.4A

 $\frac{2}{3}x-7=5$  

Tags

CCSS.7.EE.B.4A

Your friend shows you a problem they are sure there's a mistake, but they cannot figure out what it is. What did your friend do wrong?

• should have added 12 to both sides

• should have multiplied by -2/3

• should have multiplied by -3/2

• -18/2 doesn't reduce to -9

Tags

CCSS.HSA.REI.A.1