Make up two equations, one that is true and one that is false. do not state which equation is true and which is false. your classmates will have to determine which is which. create an example of an open equation that uses the variable x and would require two or more steps to solve. your classmates will have to determine which value of x makes the equation true. answer and explain how to determine whether its false or not to me. i'll give brainliest

False equation:

8 - 7 + 6 = 99 - 78

1 + 6 = 99 - 78

7 = 99 - 78

7 = 21 → Answers don't match, so it's false.

True equation:

5 + 44 - 8 = (99 - 29) - 29

49 - 8 = (99 - 29) - 29

41 = 70 - 29

41 = 41 → Answer match, so its true

Equation with x:

5x - 7 = 4x - 7 + x

5x = 4x - 7 + x + 7

5x - x = 4x - 7 + 7

4x = 4x - 7+ 7

4x = 4x 0

4x - 4x = 0

0 = 0 → equation has been solved, and is considered a true equation

To know wether an equation is false or not, you have to wither solve and see the result or solve, get the results, subsitute all the vairables in the original euqation by the result, and see if the final result matches.

Hope it helped,

BioTeacher101

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

answer: 12

step-by-step explanation:

because yes