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I don't know how to do this one please help

I don't know how to do this one please help-example-1

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Let the number of jooghs be represented by x

Let the number of naxvip be represented by y

For Yoy, he paid 5 dollars per Jooghs and 4 dollars per naxvip

The total amount he paid would be given by

=> 5 x + 4 y

we are also informed that yoy's total cost is $45

So 5x + 4y = 45

=> 5x + 4y = 45 ------- equation 1

Similarly for Gespil, he paid 3 dollars per Jooghs and 9 dollars per naxvip

The total amount he paid would be given by

3x + 9y

Since his total cost is $93

3x + 9y = 93

3x + 9y = 93 --------- equation 2

The system of equations is given by

5x + 4y = 45

3x + 9y = 93

The solution to the system of the equation can be obtained as follow

Using the elimination method

5x + 4y = 45 x 3

3x + 9y = 93 x 5

15x + 12y = 135 ---- equation 3

15x + 45y = 465---- equation 4

equation 4 - equation 3

45y - 12y = 465 - 135

33y =330

y = 330/33

y= 10

substituting y = 10 into equation 3

15x + 12x 10 = 135

15x +120 = 135

15x = 135 - 120

15x =15

x = 1

The pair of numbers that solve the system is (1, 10)

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