Question

4x-18=3y, 6x+7y-4=0 simultaneous equation​

Answer 1

Answer:

x=3,y=-2

Step-by-step explanation:

4x-18=3y [by method of elimination]

4x-3y-18=0 - equation 1

6x+7y-4= 0 - equation 2

multiplying equation 1 by 3 and equation 2 by 2, we get

12x-9y-54=0

12x+14y-8=0 [by subtracting]

- - +

__________

0x-23y-46=0

or -23y=46

or y=46/-23

or y=-2

putting the value of y in equation 1, we get

4x-3×-2-18=0

4x+6-18=0

4x-12=0

4x=12

x=12/4

x=3

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Answer 2

Answer:

In my elder brother's bag there are 350 with the coins of1 and 50 paise together. My

sister has put outį part of 50 paise coins from the bag and in that place equal number of

coins off 1 she has put into the bag and now the total amount of money in the bag is?

400. Let us calculate and write the original number of coins of 1 and 50 paise kept at first

separately in my brother's bag