3x+2y = 3&22y-8x=9, x and y ..............

Question

y+2z=5 X+2y+3z=10 3x+2y+3z=9 find a inverse

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Answer 1

hello aspirant,

the question's very easy.

use substitution method from equation 1 to get x=(3-2y)/3

put this value for x in second equation and get value of y = 51/50

now, put the value of y back in equation 1 to get value of x

x= 24/75

so, x=24/75 and y= 51/50

hope that helps

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3x+2y = 3&22y-8x=9, x and y ..............

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Question : Simplify the given expression.
$(x - 2y)(y - 3x) + (x + y)(x - y) + (x - 3y)(2x + y)$