Tricky Algebra

Level pending

x + y - 17 = 3 -z
z - x = 1
z < x + y
x < z

x + y + z = ? \boxed{?}
What is ? \boxed{?} ?


The answer is 20.

Kaleil Salomon -Jacob by Kaleil Salomon -Jacob , 20, USA

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1 solution

The answer lies in the first equation:
x + y − 17 = 3 − z \boxed{x + y -17 = 3 - z}
Add 17 + z to both sides:
x + y + z = 20 \boxed{x + y + z = 20}
The answer : 20 \boxed{20}


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x+y+z=20, z=1+x, thus 2x+y+1=20, 2x+y=19 which was asked i.e x+y+x=2x+y, so answer must be 19

Yash Bansal - 7 years, 4 months ago

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Sorry, I meant x + y + z. Typo. Fixed now.

Kaleil Salomon -Jacob - 7 years, 4 months ago

COMMON MAN DONT COMMIT SUCH MISTAKE

Anirudha Nayak - 7 years, 4 months ago

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