Question

If x + y = 45 ; y + z = 63 ; z + y = 36 , then what is x + y + z ?

1)136

2)144

3)72

4)22​

Answer 1

Answer:

Step-by-step explanation

X+Y=45,Y+Z=63,X+Z=36

add 3 equations

Then,

X+Y+Y+Z+Z+X=45+63+36

2(X+Y+Z)=144

X+Y+Z=72

Answer 2

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