Question

solve the pair of equation by substitution method 3 x minus 5 y - 4 is equal to zero and 9 x is equals to 2 y + 7​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

information given

3x-5y-4 = 0 -----------(1)

9x=2y+7

which can be written as

9x-2y-7 = 0 -------------(2)

now

x=2y+7/9

now substituting x in (1)

3(2y+7/9)-5y=4

2y+7/3-5y=4

(2y+7-15y)/3=4

7-13y=12

-13y=12-7

-13y= -5

y= -5/-13

y=5/13

as stated before

x=2y+7/9

x=2(5/13)+7/9

x= 10/13+7

-----------

9

x=101/117

hope it helps..........

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