1) 20 + (-9) +8 + (-7)
2) 4x + (-7y) + ( -5) + 6
3) 8y + (-3x) + z + (-4)
What is an equivalent expression?
The expression that is written such that it does not make any change.
In order to write an equivalent expression, we can write the negative parts inside the bracket.
For example, if we have to write 3-2 we can write it in the fashion 3+(-2).
The same approach we can do for the given equations.
1) 20 + (-9) +8 + (-7)
2) 4x + (-7y) + ( -5) + 6
3) 8y + (-3x) + z + (-4)
Thus, all three equations were converted into equivalent expressions by taking negative terms in small brackets.
To get more about the linear equation of three variables refer to the link,https://brainly.com/question/26246372
