5ax+6by=28
3ax+4by=18
Solve by cross multiplication method
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Answered by
1
Answer:
3ax+4by-18=0. ax=((6×-18)-(4×-28))/((5×4)-(3×6)). ax=4/2=2. by=((-28×3)-(5×-18))/((5×4)-(3×6)).
Answered by
7
Answer:
x = - 2/a and y= 3/b
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