Solving Proportions and Equations

Front

What is a proportion?

Back

Tags

CCSS.7.RP.A.2B

Front

How do you solve a proportion?

Back

Tags

CCSS.7.RP.A.2A

Front

What is the cross-multiplication method?

Back

The cross-multiplication method involves multiplying the numerator of one fraction by the denominator of the other fraction to find an equivalent equation.

Tags

CCSS.4.NF.A.2

Front

Back

x = 26.

Tags

CCSS.7.RP.A.2C

Front

Back

Tags

CCSS.HSA.REI.A.2

Front

Back

x = 7.

Tags

CCSS.8.EE.C.7B

Front

What does it mean to isolate a variable in an equation?

Back

Isolating a variable means rearranging the equation so that the variable is on one side and all other terms are on the opposite side.

Front

Back

x = -28.

Tags

CCSS.6.EE.B.7

Front

How do you check if your solution to an equation is correct?

Back

Substitute the solution back into the original equation to see if both sides are equal.

Tags

CCSS.6.EE.B.5

Front

What is the definition of a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value, often denoted by letters such as x, y, or z.

Tags

CCSS.6.EE.A.2B