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If you work this out, the results are as follow (in bold):4x + 7 = -3xchanges to7 = -7xchanges to-1 = x is the anwser
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67 plus 3 equals 70.
Yes, -8 plus plus 3 equals -5. The "plus plus" is equivalent to a positive sign, so -8 plus (+3) equals -5.