X=6,-6
3x= 18
X=18/3
X= 6,-6
Answer:
Step-by-step explanation:
X = number of Yan's marbles. x-3 = number of Geraldo's marbles
annswer: x + (x - 3) = 21
hopes this helps :)
The student went wrong in step three. the solutions should have been -3 and 5
14 x 12 = 168
168 divded by 2.90 = 57.9
