Step-by-step explanation:
3(x - 3) + 2x + 9 - 2x + 2(x - 1)
3x - 9 + 2x + 9 - 2x + 2x - 2
Solving like terms
5x - 2
5x = 2
x = 2/ 5
I think she incorrectly applied the multiplication and division properties of equality
Answer:
Step-by-step explanation:
Angles 3,4, and 5
More likely because you are doing a job that you enjoy doing.
Answer:
Add 6 to both sides.
Step-by-step explanation:
You are trying to solve for x in this type of question. In this case, note that there is a equal sign, and that what you do to one side you do to the other. Also note that to isolate the x (your goal), you must do the opposite of PEMDAS. (Note that PEMDAS = Parenthesis, Exponent (& Roots), Multiplication, Division, Addition, Subtraction).
So your first step is to add 6 to both sides.
2/5x - 6 (+6) = -16 (+6)
Simplify. Solve:
2/5x + (-6 + 6) = -16 + 6
2/5x = -10
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Finish finding for x.
Multiply the recipricol of the fraction to both sides to isolate the x. Multiply 5/2 to both sides:
(5/2)(2/5)x = (-10)(5/2)
x = (-10)(5/2)
x = (-50)/2
x = -25
x = -25 is your answer.
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Explanation:
Expand the right side using the distributive property, then collect terms.
x² -y² = (x -y)(x +y)
= (x)(x +y) -y(x +y)
= x² +xy -yx -y²
= x² +(xy -xy) -y²
= x² -y² . . . . . . . . . . as required