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Solve 2x+3y=11and 2x-4y=24and hence find the value of‘m’ for which y=MX+3. |
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Answer» Step-by-step explanation: 2x+3y=11 2x-4y=24 2x+3y=11 -2x+4y=-24 (multiplying -1 to equation 2) 7y=-13; y=-13/7 Substitute y in equation 1 2x+3y=11; 2x+3(-13/7)=11; 2x+(-39/7)=11;2x=11+39/7; 2x=77-39; 2x=38/7; 7 y=mx+3 -13/7=m(38/7)+3 -13/7-3=38m/7 -13-21 =38m/7 7 -34/7×7=38m -34/38=m m= -17/19 |
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