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24.11.2020 •
Mathematics
8x-4+6x+15
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Ответ:
2x+11
Step-by-step explanation:
8x-4+6x+15=
8x-6x-4+15+=
2x+11
Ответ:
Billy will be 16
Amy will be 22
Step-by-step Explanation:
x=Amy y=Billy
x+x-6=22 x-6=y
2x-6=22 14-6=y
2x=28 y=8
x=14
14+8=22 8+8=16