Davisja21
31.03.2021 •
Mathematics
Substitution:
y=6x+11
y-4x=15
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Ответ:
x=2
Step-by-step explanation:
6x+11-4x=15
2x+11=15
2x=4
x=2
Ответ:
2)y= 6
3)7= 170
4)x= 42
5)y=2/7
6)z= 45/4