What will the first step look like for the substitution problem:
Y = 2x
X+Y = 9
...
Mathematics, 13.09.2021 14:00 smartgirl143
What will the first step look like for the substitution problem:
Y = 2x
X+Y = 9
A. 2y+y=9
B. y=2x+9
C. y+2x+x+y=9
D. x+2x=9
Answers: 1
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