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earcake2470
26.01.2020 •
Mathematics
Simultaneous equation:
solve:
2x-3y=11
5x+2y=18
Solved
Show answers
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Ответ:
Ответ:
3*5x+3*2y=3*18(2)
add equation(1)&equation(2)
4x+15x=22+54
19x=76
x=4
put the value of x in equation(1)
2*2*4-2*3y=2*11
16-6y=22
16-22=6y
6y=-6
y=-1
x=4
Ответ: