contestada

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?

Respuesta :

Third step has the error. Subtracted 6 on left while adding 6 on the right side. Needs to be minus on both sides to get rid of 6.

Otras preguntas