Solve for Variable Algebra

If there is not a number in front of a variable, it is understood to be ....

• 1

• 0

• -1

• 5

Solve this expression. 2x - 3y

x=7 and y =4

• 12

• -7

• 2

• -2

Solve this expression. Substitute the numbers for the variables.

s = 2, y = 4,

y² + ( 10 - 4)^s - 3y

• 34

• 40

• 16

• 26

Solve for x:
2x + 5 = 12

• 7

• 3

• 3.5

• 8.5

7x+8=29

The first step to solving this equation is to ​ (a)   from both sides. The next step is to ​ (b)   on both sides. The answer is ​ (c)   .

• subtract 8

• divide 7

• x=3

• add 8

• multiply 7

• x=2

• multiply 8

• x=7

• x=2.6

The first step to solve this equation is to ​ (a)   . The next step is to ​ (b)   . The answer is ​ (c)   .

• subtract 8

• divide 7

• x=3

• add 8

• multiply 7

• subtract 7

• x=2

• x=5.2

• x=7

• divide 8

Solve the equation.

3x - 2 = x + 10

Mathematical Equivalence

ON

What is the solution to - (6m + 8) = 4(17 - m)?

Mathematical Equivalence

ON

What branch of mathematics deals with equations with variables?

• Algebra

• Geometry

• Calculus

• Physics

Solve for x: 7x + 7 = 21

• x = 7

• x = 4

• x = 3

• x = 2