Learn Algebra in 20 minutes !

If you know basic Arithmetic, you can learn PRACTICAL Algebra in 20 minutes because Algebra is easy. Tests on practical skill is included in this video.
(some answers: at 2:11… -(-1+2)=1-2 & -(-A+B)=A-B & +(-A+B)= -A+B & -(-A-B)=A+B
at 2:31 …A+1=10 became A=10-1 & A-1=10 became A=10+1 )

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