Turn Equation into X=form test, for example X+2=2+3, to turn into X=form test we have to move X+2= +2 to the right side of the equals sign, and write X=2+3-2.

This principle is actually Equation two sides at the same time plus or minus one number Equation invariant principle: X+2=2+3

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X+2 (-2) = 2+3 (-2)

For example : X+2+3-2

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Again for example : 2X+10=X-8+2

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Shift X to the left first 2X-X=-8+2-10 (2X-X in -X is obtained by shifting X to the left from above, -8 in -8+2-10 -8 is obtained by taking away the remaining X item, which can be thought of as +X, and -10 is obtained by shifting the item to the left from +10)

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Re Calculator X=-16