The problem
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Why do you change the addition to subtraction when solving this problem?
Answer provided by our tutors
We are multiplyng (+7) and (-3) and since +7*-3 = - 21 the sign becomes '-'
Why do you change the addition to subtraction when solving this problem?
We are multiplyng (+7) and (-3) and since +7*-3 = - 21 the sign becomes '-'
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