Question

Which equation is an identity? (1 point)
() 7-(9x+3)=-9x-4
() 6m-5=7m+5-m
() 10p+6-p=12p-3(p-2)
() 3y+2=3y-2

Which equation has no solution? (1 point)
() 7v+2=8v-3
() 3x-5=3x+8-x
() 4y+5=4y-6
() 7z+6=-7z-5

Solve the equation.
5+7x=11+7x (1 point)
() 0
() 14
() infinitely solutions
() no solution

Answer 1

1 - c
2 - c
3 - d

Answer 2

Thank you!! Could you kind of explain to me how you do it?

Answer 3

sure
\
in (1)
u just have to simplify (as we learned earlier) and sum the same numbers -the ones with the variable - -and the ones without the variables-. and they should be equal on the both sides , OK ?

Answer 4

I understand it now thank you!!

Answer 5

in 2
u can see that when you simplify the equation you`ll have no variables left -in (c)-, so there is no variable to found its value !! ;)

Answer 6

in (3)
the same thing in (2) -c- happens
so there are will be no variables to find its value
so it will be no solution

Answer 7

OK ??

Answer 8

Thank you !! :)

Answer 9

ur welcome bro