if x is equal to 3z + 4 ;Y is equal to x - 4 and z =1.5 then find the value of 2x + 3y - 2z
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Answered by
2
X=3z+4......¡
Y=x-4.........¡¡
Z=1.5......¡¡¡
Now putting z=1.5 in eqn 1 ,we have
X=4.9
Now x=4.9 in eqn ¡¡
we hve ,y=4.5
Now we hve to find the value of
2x+3y-2z=9.8+13.5-3
So the reqd value is 23
Y=x-4.........¡¡
Z=1.5......¡¡¡
Now putting z=1.5 in eqn 1 ,we have
X=4.9
Now x=4.9 in eqn ¡¡
we hve ,y=4.5
Now we hve to find the value of
2x+3y-2z=9.8+13.5-3
So the reqd value is 23
Vinayakkumarmodanwal:
you are wrong
Check ur Solution first
Y me may b u r wrng u frst chck ur sln
ok then put your answer in the equations and verify them
You had missed to multiply 3 from 1.5
Answered by
3
3z+4=x 3(1.5)+4=8.5 so x=8.5
x-4=Y. 8.5-4=4.5 so Y=4.5
2x+3y-2z 2×8.5+3×4.5-2×1.5=17+13.5+3
Answer is 33.5
x-4=Y. 8.5-4=4.5 so Y=4.5
2x+3y-2z 2×8.5+3×4.5-2×1.5=17+13.5+3
Answer is 33.5
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