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2x + 5y = 1 is multiplied by 4

Sagot :

Answer:

APPLY THIS METHOD→→

  • x+y=4 ___(1), 2x−5y=1__(2)

multiply eq. (1) by 2.

and then subtract eq. (2)

2x+2y=8

2x−5y=1

- + -

____________

7y=7

y=1

x+y=4

x+1=4

x=3

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