Answer:
x=3
y=3
z=1
Explanation:
3x+2y=15 3x(3x)+2y=15 3+3(3)-2=1
6x= 18 9+2y=15 3+9-2=11
-6 -6 9 9 12-2=11
x=3 2y=6 12 12
y=3 7= -1
7= -1
answer: x = 3
z= 1
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