Makakuha ng mabilis at maaasahang mga sagot sa iyong mga tanong sa IDNStudy.com. Magtanong ng anumang bagay at makatanggap ng kumpleto at eksaktong sagot mula sa aming komunidad ng mga propesyonal.
Answer: 7, 21, and 23
Step-by-step explanation:
Let the 3 numbers be x (1st number), y (2nd number), and z (3rd number).
The 2nd number is 3 times the first:
y=3x (Eq. 1)
The 3rd number is 2 more than the 2nd:
z= y+2 (Eq. 2)
7 less than twice the 2nd is equal to 12 more than the 3rd:
2y-7=z+12 (Eq. 3)
Rewrite the Eq. 3 by substituting z=y+2 and solve for y:
2y-7=y+2+12
y=21
Input y=21 into Eq. 1 and Eq. 2 to get x and z:
In Eq. 1:
21= 3x
x= 7
In Eq. 2:
z= 21+2
z= 23