Liliana solved the equation below. When she tried to verify her answer, she realized she made an error. One-third (x + 18) = 7 One-third x + 6 = 7 One-third x + 6 minus 6 = 7 + 6 One-third x = 1 x = 3 Which correction should Liliana make? The first step should be One-third x + 54 = 7. The second step should be One-third x + 6 minus 6 = 7 minus 6. The third step should be One-third x = 13. The final step should be x = one-third.

you cant answer this dummy

step-by-step explanation:

your answer would be 12

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

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