Math, asked by yashwanth6881, 1 year ago

5÷x+6y=13 3÷x+4y=7 solve by cross multiplication​

Answers

Answered by dev42554
0

x(5/x+6y)=133+4y/7

x×5/x+x×6y=133+4y/7

in x×5×x x will cut the other x.

then x will multiply with 6 y then we will get 6xy .

so the new equation will be

5+6xy=133+4y/7

7 is on RHS it will be moved to LHS so now 7 was dividing on the RHS it will multiply in LHS

7(5+6xy)=133+4y

35+30xy=133+4y

30xy-4y=133-35

30xy-4y=98

30xy-y=98/4

xy-y=49/2/30

xy-y=49/2×1/30

xy-y= 49/60

after simplifying we will get

xy-y=

49 \div 60

xy-y= 0.8166667

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