Question

pls answe I'll mark as btainalist
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Answer 1

Answer:

let X=1, Y=2, Z=3.

a)

X+(Y+Z) = 1+(2+3) = 1+ 5 = 6

(X+Y)+Z = (1+2)+3 = 3+3 = 6

therefore, X+(Y+Z) = (X+Y)+Z

b)

X(YZ) = 1(2x3) = 1 x 6 = 6

(XYZ) = (1 x 2 x 3) = 6

therefore, X(YZ) = (XYZ)

pls mark as brainliest