If x=3z+4 ;y=x-4 and z=1.5, find the value of 2x+3y-2z
Answers
Answered by
9
2x+3y-2z
=2(3z+4)+3(x-4)-2(1.5)
=6z+8+3x-12-3
=3x+6z-12
=2(3z+4)+3(x-4)-2(1.5)
=6z+8+3x-12-3
=3x+6z-12
srivastavah09:
i think you have just out the value but you have not solved the whole question?
*put
Answered by
4
Answer:
Step-by-step explanation:
Answer:
27.5
Step-by-step explanation:
Since z = 1.5, we have
x = 3z + 4 = ( 3 x 1.5 ) + 4 = 4.5 + 4 = 8.5
and then
y = x - 4 = 8.5 - 4 = 4.5.
Putting these values into the required expression, we get
2x + 3y - 2z
= (2)(8.5) + (3)(4.5) - (2)(1.5)
= 17 + 13.5 - 3
= 27.5
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