Question

please answer please answer please answer​

Answer 1

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

Answer 2

$\huge \boxed{solution}$

(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!