if 17x+14y =164 and 14x+17y = 146 then value of 3x =??
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17x+14y=164.....(1)
14x+17y=146.....(2)
adding both equations 31x+31y=310
31(x+y)=310
x+y=310/31=》x+y=10
subtracting 2 from 1
17x+14y-(14x+17y)=164-146
3x-3y=18
3(x-y)=18
x-y=18
x+y=10
adding both
2x=28 =》x=14
so 3x=3×14=42
14x+17y=146.....(2)
adding both equations 31x+31y=310
31(x+y)=310
x+y=310/31=》x+y=10
subtracting 2 from 1
17x+14y-(14x+17y)=164-146
3x-3y=18
3(x-y)=18
x-y=18
x+y=10
adding both
2x=28 =》x=14
so 3x=3×14=42
champion360:
please mark as brainliest
find value of x & y
oh sorry there is a mistake I forgot to divide 18 by 3 so your correct answer is 24
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