Question

x+y=48 and x-y=18 then what is value of x?​

Answer 1

Answer:

From eq1

x+y=48

x=48-y

now put the value in eq 2

x-y=18

48-y-y=18

48-2y=18

48-18=2y

30=2y

y= 15

now put value of y in eq1

x+y=48

x+15=48

x= 48-15

x=33

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Answer 2

Answer:

x-y = 18

y = x-18

x+y=48

Substituting y with x-18

x+(x-18) = 48

x+x-18 = 48

2x = 66

x = 33