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Answer:
1). A mathematical equation which represent the relationship of two expressions on either side of the sign.
2). 7x + 9= 16
7x=16-9
7x = 7
x = 7/7
x= 1
Verified answer
[tex] \huge \boxed{solution}[/tex]
(1). Simple equation=>. A mathematical equation which represents the relationship of two expressions on either side of the sign. It mostly has one variable and equal to symbol.
Example: 2x -5= 3
(2). 7x +9=16
= 7x= 16-9
= 7x=7
=X= 7/7=1 Ans.
(3) In ∆ PQR
=>. 45+68+3x+16=180. [Angle sum property]
= 129+3x=180
= 3x=180-129
= 3x=51
= X= 51/3
= X= 17 Ans.
(5) Five times= 5x
= 5x-15=20
= 5x=20-15
= 5x=5
= x= 5/5
= x= 1 Ans.
Hope it's help you dear!