find the value of x if x + Y is equal to 14 and x minus Y is equal to 4
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Step-by-step explanation:
x+y=14..................................(1)
x-y=4................................. (2)
By adding equations 1&2,we get:-
x+y+x-y=14+4=18
=>2x=18
=>x=18÷2=9
=>x=9
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