Question

6x + 7y - 11 =0 ; 5x + 2y = 13 solve it using cross multiplication

please guys solve it
it's urgent

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Answer 1

Cross-Multiplication Method

6x + 7y - 11= 0

5x + 2y = 13

Answer:

6x  + 7y -11 = 0

5x + 2y - 13 = 0

x/ 7 * - 13 - ( + 2) * (-11)    =     y/ -11 * 5 - 6 * (-13)  =   1/ 6 * 2 - 5 * 7

x/ -69 = y/ 23= 1/ -23

x/ -69 = 1/ - 23       and            y/23 = 1/ -23

x/ 69 = 1/23                              y/1 = 1/-1

x/ 3 = 1/1                                   y= -1

Cross multiply

x = 3