Question

If x = 3z + 4 ; y = x - 4 and z = 1.5 . find the value of 2x + 3y - 2z​

Answer 1

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Given ,

x = 3z + 4 , y = x - 4 and z = 1 . 5

I ) x = 3 x 1.5 + 4

= 4.5 + 4

= 8.5

ii ) y = x - 4

= 8.6 - 4

= 4.5

Now ,

= 2 ( 8.5 ) + 4( 4.5 ) - 2( 1.5 )

= 17 + 13.5 - 3

= 30.5 - 3

= 27 . 5

Hence , your answer is 27.5 .

Hope it will help you