solve the following: 4x-5y=12; 3x+2y=25
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Step-by-step explanation:
4 x - 5 y = 12. ×2
3x + 2y = 25 × 5
This gives
8x - 10y = 24
15x + 10y = 125
Therefore,
23x = 149
so x= 149/23
8×149/23 -10y = 24
10y = (1192-552)/23
10y = 640/23
y= 64/23
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