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Maths Puzzle
Numerical Ability
what is 4(x-1)+2=18 ? showing the step-by-step process?
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i really dont get properties what kind of properties are these?
10)7(8-3)=7(5)
13)(6+9x=15x
14)(7-4)(6)=3(6)
15)xyz=1xyz
16)8+5=(4+4)+5
17)if 6+3=9 and 9=3(3), then 6+3(3).
Can someon help me simplify a complex fraction??
(1/x+2/y)/(4/xy)