Solving Linear Equations in One Variable

Choose the best response: "A solution to an equation is ___________________."

• the answer

• the last step

• whatever Photomath tells me it is.

• the value of the variable that makes the equation true.

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.7

True or False? If  $x=4$  , then  $x+7=4+7$  

• True

• False

Tags

CCSS.6.EE.B.5

Solve for x.  $3x-2-x=18$  

•  $x=5$  

•  $x=4$  

•  $x=10$  

•  $x=8$  

Tags

CCSS.7.EE.B.4A

Which would not be a valid next step to solve the equation  $3-4x+2=1$  

•  $3+2-4x=1$  

•  $5-4x=1$  

•  $3+2=1+4x$  

•  $3-2+4x=1$  

Tags

CCSS.7.EE.B.4A

When describing the goal of solving equations, some say "Get x by itself." Most likely, what they mean is ___________

• Perform a series of steps until the equation is in the form $x=$

• Getting x by itself is cruel. No one says that anymore. #Getwoke

• If you wait long enough, the equation will solve itself

• I have never heard anyone say that and, believe me, I always pay attention in class

Tags

CCSS.7.EE.B.4A

 Which is not a valid step when solving the equation  $2\left(3x-4\right)+2x=-4$  

• Simplify the LHS by combining the 3x and 2x

• Simplify the LHS to get $2\left(3x\right)+2\left(-4\right)+2x$  

• Rewrite  $3x-4$   as  $3x+-4$  

• Simplify the LHS to get $6x-8+2x$  

Tags

CCSS.HSA.REI.A.1

Solve for x.  $3x+2\left(1-3x\right)=0$  

•  $2=0$  doesn't make sense

•  $x=1$  

•  $x=\frac{2}{3}$  

•  $2=3x\ \rightarrow$  no solution

Tags

CCSS.8.EE.C.7B

Solve for x.  $22-3x-22-3x=12$  

•  $x=0$  

•  $x=2$  

•  $x=-2$  

•  $0=12$  doesn't make sense.

Tags

CCSS.8.EE.C.7A

The solution to the equation  $2x+5x+18+x=-1045$  must be __________. 

• about 120

• greater than 18

• positive

• negative

• a number I have never seen before

Tags

CCSS.8.EE.C.7B

Which is not an equivalent form of the equation  $3-\left(4+2x\right)-1=0$  ?

•  $3-\left(4+2x\right)=1$  

•  $3+-4+-2x+-1=0$  

•  $2-\left(4+2x\right)=0$  

•  $2x=-2$  

•  $3-1-4+2x=0$  

Tags

CCSS.8.EE.C.7A