Mathematics, 05.06.2020 05:58, randyg0531
When we have solved two-step linear equations previously, we have been applying properties
of equality in order to isolate the variable (get it by itself). Here are those properties again
PROPERTIES OF EQUALITY
1. Addition/subtraction property: If a=b then a+c=b+c and a-c=b-c
2. Multiplication/division property: If u = b then c-a=c-b and
ab
(as long as e *0).
We want to use these properties when variables are on both sides of the equation. They give us
permission to add, subtract, multiply and divide both sides of the equation in order to isolate the
variable.
Exercise #2: Let's revisit the equation 5x + 6 = 2x +30. We will now isolate the variable.
(a) The first two steps would be the following:
5x + 6 = 2x + 30
- 6= -6
5x = 2x + 24
- 2x = - 2x
3x =24
What property justifies both steps?
Answers: 2
Mathematics, 21.06.2019 21:30, jabezslade22
Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.
Answers: 1
Mathematics, 21.06.2019 21:40, Casey7019
Asystem of linear equations contains two equations with the same slope. select all of the correct statements. i a. the system may have two solutions. - b. the system may have infinitely many solutions. c. the system may have one solution. o d. the system may have no solution. submit
Answers: 3
Mathematics, 21.06.2019 23:20, galaxyomg661p0edpt
8litres of paint can cover 129.6 mยฒ. how much paint is required to paint an area of 243mยฒ?
Answers: 3
When we have solved two-step linear equations previously, we have been applying properties
of equal...
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