SOL 7.12: Equations Prep

Presentation

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Mathematics

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7th Grade

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Medium

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CCSS

HSA.REI.A.1, 7.EE.B.4A, HSA.CED.A.3

Standards-aligned

Regina Watson

Used 35+ times

FREE Resource

3 Slides • 15 Questions

SOL 7.12: Equations Prep

I can solve two-step linear equations in one variable, including practical problems that require the solution of a two-step linear equation in one variable.

Two-Step Equations Tips

Isolate the variable
What you do to one side you must do to the other
Use inverse (opposite) operations to solve
"Undo" addition/subtraction first, then multiplication/division
equations can be modeled using colored chips, algebra tiles, or weights on a balance scale
An equation is a mathematical sentence that states that tow expressions are equal
Always check your answers!

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Multiple Choice

$2x+5=23$
Solve for x.

-9

-14

Tips for verbal sentences....

watch for turn around words: less than, subtracted from
"is" means =

Multiple Choice

Which equations means "a number increased by the product of 7 and 12 is 93"?

$7x+12=93$

$7x+12x=93$

$\left(x+7\right)\left(12\right)=93$

$x+\left(7\right)\left(12\right)=93$

Multiple Choice

-2

-5

Multiple Choice

Ms. Alvey's scarf is 4 inches more than half the length of Mrs. Watson's scarf. Ms. Alvey's scarf is 34 inches long. How long is Mrs. Watson's scarf?

15 inches

60 inches

112 inches

128 inches

Multiple Choice

What is the equation shown in this picture?

$3x=7$

$-3x=-7$

$x-3=-7$

$x+3=7$

Multiple Choice

Solve for x.

$x=-4$

$x=\frac{7}{3}$

$x=4$

$x=-10$

Multiple Choice

Which of the algebraic equations below represents the following verbal sentence?

Seven less than a number is eight

$7-x=8$

$x-7=8$

$-7x=8$

$7+x=8$

Multiple Choice

Which of the algebraic equations below represents the following verbal sentence?

A number decreased by nine is twelve

$9-n=12$

$n-9=12$

$9n=12$

$12-9=n$

Multiple Choice

$6x-4=32$

Which verbal sentence represents the equation above?

the product of six and a number less than 4 is 32

the quotient of six and a number, minus four is 32

six times the difference of x and 4 is 32

Four less than the product of six and a number is 32

SOL 7.12: Equations Prep

I can solve two-step linear equations in one variable, including practical problems that require the solution of a two-step linear equation in one variable.

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