Solve 3x-6y=9, 2x+7y=28
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Answer:
by elimination method
3x-6y=9 *2 and 2x+7y=28 *3
6x-12y=18 eq 1 , 6x+21y=84 eq 2
from 1 and 2
6x-12y=18
6x+21y=84
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-33y=-66
33y=66
y=66/33
y=2
put y =2 in eq 1
6x-12(2)=18
6x-24=18
6x=18+24
6x=42
x=42/6
x=7
Step-by-step explanation:
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