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0.4x+0.3y=1.70.7y-0.2y=0.8 |
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Answer» Step-by-step explanation: 0.4x+0.3y =1.7 multiplying by 10 in both sides => 4x+3y= 17........,.......(1) 0.7y-0.2y=0.8 0.5y= 0.8 5y= 8 multiplying by 10 y= 8/5 putting the VALUE of y in (1) 4x+3×8/5= 17 4x+24/5= 17 4x= 17-24/5 = (17×5-24)/5= 61/5 x= 61/(5×4) = 61/20 therefore x= 61/5= 12 INTEGE 1/5 y= 8/5= 1 integer 3/5 |
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