Simplify (3x - 5) + (3x + 6).

Since neither of the bracketed expressions is preceded by a minus sign, and neither one has a multiplier outside of it, all of the parentheses can simply be removed. (3x - 5) + (3x + 6)3x - 5 + 3x + 6Combine the 'x'-terms:  3x + 3x = 6xCombine the numbers:  -5 + 6 = 1The expression is equivalent to . . . . . 6x + 1

add like terms.3x + 3x + -5 + 6your final answer would be 6x + 1