moose12002
26.11.2019 •
Mathematics
Using elimination method, simultaneously solve, 6x+2y=20 and 0.5x-0.5y=1
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Ответ:
x=3, y=1. (3, 1)
Step-by-step explanation:
6x+2y=20
0.5x-0.5y=1
6x+2y=20
1/2x-1/2y=1
6x+2y=20
2(1/2x-1/2y)=2(1)
6x+2y=20
x-y=2
6x+2y=20
x=y+2
6(y+2)+2y=20
6y+12+2y=20
8y+12=20
8y=20-12
8y=8
y=8/8
y=1
x=1+2=3
x=3, y=1.
Ответ:
si me brainlist
Step-by-step explanation: