(i)[4x​35​]=[y1​z5​] Since both the matrices are equal, so their corresponding elements are also equal.Find the value of unknowns by equating the corresponding elements.​4=y3=zx=1​ (ii) Since both the matrices are equal, so their corresponding elements are also equal. Find the value of unknowns by equating the corresponding elements.[x+y5+z​2xy​]=[65​28​] ​x+y=6…(1)5+z=5=>z=0xy=8….(2)​ From equation (1), x=6-ySubstitute the value of x in equation (2)​(6−y)y=86y−y2=8​ ory2−6y+8=0 ​(y−4)(y−2)=0y=4 or y=2​ Put values of y in equation (1), x +y =6, we have y=2 and y=4We get x=4 and x=2Therefore, x=2, y=4 and z=0 or x=4, y=2 and z=0.(iii)Since both the matrices are equal, so their corresponding elements are also equal.Find the value of unknowns by equating the corresponding elements.​⎣⎡​x+y+zx+zy+z​⎦⎤​=⎣⎡​957​⎦⎤​x+y+z=9…(1)x+z=5…(2)y+z=7…(3)​  equation (1) - equation (2), we get  y=4Equation (3):4+z=7⇒z=3 Equation (2):x+3=5⇒x=2 Answer: x=2,y=4andz=3