IsabellaGracie
14.12.2021 •
Mathematics
This is 6th grade work there will be more questions on this but i needed help on this
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Ответ:
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
Ответ:
8 - 8 + 2 = 2
The answer is 2