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Find two numbers such that the larger number added to three times the smaller number gives 7 and twice the larger number added to smaller number gives 9 |
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Answer» let the LARGER no.be y and SMALLER no.be x(y+3x=7)eq.1(x+2y=9)eq.2multiply the eq.1 with 2so,the eq.are2y+6x=14 eq.3x+2y=9 eq.4by changing the signs of eq.4the eq.are now2y+6x=14-x-2y=-9(SUBTRACT the eq.3 from eq.4)5x=5x=5/5=1x=1putting x=1 in eq.21+2y=92y=9-12y=8y=8/2y=4the answers arex=1y=4this method is done by ELIMINATING the coefficienthope it helps you ,mark as the BRAINIEST plzStep-by-step explanation: |
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