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7+2n
7x + 7 + 6x - 9 = 13x - 2
Re-write it properly first, in all-algebraic language: ' 7 + 8j + 7 -2j ' Now put like terms together: ' 7 + 7 +8j - 2j ' Then simplify by doing the arithmetic: ' 14 + 6j. ' And there you are!
To simplify the expression 5k + 7 + 3k, first combine like terms by adding the coefficients of the k terms: 5k + 3k = 8k. Then, add the constant term: 8k + 7 = 8k + 7. So, the simplified expression is 8k + 7.
x+5+3x-7+9x+3-4x Collect like terms: 9x+1