Prep for 3.2 Substitution

Solve for the variable that is ALONE. If the only variable alone has a (-) be sure to write a (-1) before you solve.

3x + y = -4

• x = -4 - y

• y = -4 - 3x

• x = (-1)(-4 - y)

• y = (-1)(-4 - 3x)

Tags

CCSS.HSA.CED.A.4

Solve for the variable that is ALONE. If the only variable alone has a (-) be sure to write a (-1) before you solve.

x - 4y = -12

• x = 4y - 12

• x = 4y + 12

• x = -4y + 12

• x = -4y - 12

Tags

CCSS.6.EE.C.9

Solve for the variable that is ALONE. If the only variable alone has a (-) be sure to write a (-1) before you solve.

x - 2y = 4

• x = 4 + 2y

• x = 4 - 2y

• x = 2y - 4

• x = -4 + 2y

Tags

CCSS.6.EE.C.9

Solve for the variable that is ALONE. If the only variable alone has a (-) be sure to write a (-1) before you solve.

2x - y = -1

• x = 1

• y = 2x + 1

• y = 2x - 1

• y = -2x + 1

Tags

CCSS.6.EE.C.9

Solve for the variable that is ALONE. If the only variable alone has a (-) be sure to write a (-1) before you solve. x - 3y = 12

Mathematical Equivalence

ON

Tags

CCSS.HSA.CED.A.4

Solve for the variable that is ALONE. If the only variable alone has a (-) be sure to write a (-1) before you solve.

5x + y = 4

Mathematical Equivalence

ON

Tags

CCSS.HSA.CED.A.4

Solve for the variable that is ALONE. If the only variable alone has a (-) be sure to write a (-1) before you solve.

x - 5y = 5

Mathematical Equivalence

ON

Tags

CCSS.HSA.CED.A.4

Solve for the variable that is ALONE. If the only variable alone has a (-) be sure to write a (-1) before you solve.

9x + y = -5

Mathematical Equivalence

ON

Tags

CCSS.6.EE.C.9

Solve for the variable that is ALONE. If the only variable alone has a (-) be sure to write a (-1) before you solve.

3x + y = 1

Mathematical Equivalence

ON

Tags

CCSS.6.EE.C.9

Solve for the variable that is ALONE. If the only variable alone has a (-) be sure to write a (-1) before you solve.

-x + 2y = 4

Mathematical Equivalence

ON

Tags

CCSS.6.EE.C.9