chem1014
30.03.2021 •
Mathematics
Solve the following system of equations by substitution.
1. y=x+3 and y=2x+1
2. x+y=7 and x+2y=11
3. 2y=x+7 and x=y-4
4. -3x-4y=-2 and y=2x-5
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Ответ:
c
Step-by-step explanation:e