Math, asked by satishklukuri, 9 days ago

20-(2r-5)=25 solve the equation and check the result in the chapter simple equations

Answers

Answered by lol1029
17

Answer:

r = 0

Step-by-step explanation:

20 - (2r - 5) = 25

=> 20 - 2r + 5 = 25

=> 25 - 2r = 25

=> - 2r = 0

=> r = 0/-2

=> r = 0

Checking:

20 - (2 x 0 - 5) = 25

20 - (0 - 5) = 25

20 - (-5) = 25

20 + 5 = 25

25 + 25

Answered by amitnrw
10

Given  :  20 - (2r - 5)  = 25

To Find : Solve the equation

and Verify the result

Solution:

20 - (2r - 5)  = 25

Subtract 20 from both sides

=> -(2r - 5)  = 25 - 20

=> -(2r - 5)  = 5

Multiplying by -1 on both sides

=>(2r - 5)  = - 5

=> 2r - 5 = - 5

cancel -5 from both sides

=> 2r = 0

Divide by 2 both sides

=> r = 0

Hence value of r = 0

Verification :

20 - (2r - 5)  = 25

Substitute r = 0  in LHS

LHS = 20 - (2 * 0 - 5)

= 20-(0 - 5)

= 20 - (-5)

= 20 + 5

= 25

= RHS

LHS = RHS

Hence Verified

Learn More:

Solve the following x+y/xy=5 and x-5/xy=7 - Brainly.in

brainly.in/question/8168066

solve for x and y : x+y/xy=2,xy/=6

brainly.in/question/12892518

Similar questions