book
Maths Puzzle
Numerical Ability
solve
4a-5b-c=-26
5a+b+2c=-5
2a+4b+c=6
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book Other Question
x varies directly as the square of s, and inversely as t. How does x change when s is doubled? When both s and t are doubled, how does x change?
Please simplify this expression:
1/(6^(-1/3) + 5^(-13))