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Hey mate! your answer is -24!
let wheels be 'x' .
so, x+x+x= 18
=> 3x = 18
=> x = 18/3
=> x= 6
then, value of wheel = 6
let tree be 'y'.
now, 6+ y+y = 26
=> 6+2y. = 26
=> 2y = 26-6
=> y = 20/2
=> y = 10
then, value of tree is 10.
let the value of leaf be 'z'.
so, Z+ 6+10=20
=> Z+ 16 = 20
=> Z. = 20-16
=>. Z = 4
then, value of leaf is 4.
lastly, 6 -4*10+10
= 6-40+10. (using DMAS)
= 6- 30
= -24
hope it was helpful and right!✌️


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