Question

Is X=5 the solution of 4x-5=7?

Answer 1

Answer:

4x-5=7

4x-5+5=7+5

4x=12

4x/4=12/4

x=3

Answer 2

Answer:

4x-5=7

x=5

4 (5)-5=7

20-5=7

15=7

so 5 is not the soultion ...

the solution is

4x-5=7

4x=7+5

4x=12

x=12/4

x=3...

so the solution is 3

verification:

4x-5=7

4 (3)-5=7

12-5=7

7=7

hence proved...

hope it helps you...

thankyou....