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When subtracting integers:

1) Change subtraction to addition

2) If second number is negative change to positive or if second number is positive change to negative.

3)solve as if it were addition

ONLY USE FOR SUBTRACTION

4- -2 would change to 4+2

Your answer is 6.

Q: How do you solve 4 - -2?

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3x - 4 = -2 The answer is x=2/3

4 over 1 is 4. 2 + 4 is 6.

say it is 1 over 2 is equal to x over 4 you multiply 4 and 1 then 2 and x and you get 4=2x. Solve for x = 2. So the equivalent proportion is 2/4.