When figuring out 4x-2y=10, how do I move the -2 over? What I mean is:
4x-27=10, subtract 4x
-2y=-4x+10

What do I do after this?

Question

When figuring out 4x-2y=10, how do I move the -2 over? What I mean is:
4x-27=10, subtract 4x
-2y=-4x+10

What do I do after this?

anonymous · Answer

Basically we use opposite operations
addition changes to subtraction (so +4x changes to -4x)
subtraction changes to addition
multiplication changes to division
division changes to multiplication
 -2y = -2 x y so this is multiplication so it changes to division
so divide both sides by -2 and u get 
          - 4x + 10           -2(2x -5)
y = ------------  = ----------  = 2x-5 (after cancelling common factor -2 )
             -2                        -2


Hope this clears it for you......

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