Solve x + x + 2 + 2x = -2. -2 -1 0 1

2 answers:

5 0

x + x + 2 + 2x = -2
x + x + 2x = -2 -2
-//- = -4
2x + 2x = -4
4x = -4
x = -4 /4
x =-1

Helga [31]4 years ago

4 0

Remember, you can do ANYTHING to an equation as long as you do it to both sides

x+x+2+2x=-2
regropu to add x's
1x+1x+2x+2=-2
4x+2=-2
minus 2 from both sides
4x+2-2=-2-2
4x+0=-4
4x=-4
divide both sides by 4
4x/4=-4/4
(4/4)x=-1
1x=-1
x=-1

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