2 years ago

This is 6th grade work there will be more questions on this but i needed help on this

Mathematics

2 answers:

sweet-ann [11.9K]2 years ago

6 0

His awnswers true so ummmmmmmmm yeah

nata0808 [166]2 years ago

3 0

Answer:

Step-by-step explanation:

X + (X + 4) + (X - 7) = 54

3X - 3 = 54

3X - 3 + 3 = 54 + 3

3X = 57

3X / 3 = 57 / 3

X = 19

Y = (19 + 4) = 23

Z = (19 - 7) = 12

Sam's age = 19

Dana's age = 23

Alex's age = 12

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