Which expressions are equivalent to 6 +(-x) + 2x + (-
7) + 2x? Check all that apply.
1)X+X+6 - 7 + x
2)2x + 2 + x
3)3-x+ 2x - 4 + 2x
4)x-1
5)x+1

Step-by-step explanation:

After you enter the expression, Algebra Calculator will print a step-by-step. Here are some examples: y=2x^2+1, y=3x-1, x=5, x=y^2. For example the command 2x at 3 evaluates the expression 2x for x=3, which is equal to 2*3 or 6. If we instead try a value that doesn't work, say x=3 (try 2x+3=7 at 3)

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step-by-step explanation: