substitution method: 2x+y=4.7 ; 14/4(x+y)= 1
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● MAKE Y THE SUBJECT IN FIRST EQUATION
● WORK FOR THE VALUE OF X BY THE SECOND EQUATION
◇ x=4.4
● NOW SUBSTITUE THE VALUE OF X IN THE EQUATION WHICH YOU MADE FROM FIRST EQUATION i.e y=4.7-2x
● y= 4.7-2 (4.4)
◇ y= -4.1
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