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23
56.
To clarify the order of operations in the math problem, you can use parentheses as follows: (3 times 42) plus (84 divide by 2) plus (2) equals 56.
3 2/7 + 6 3/8 = 3 16/56 + 6 21/56 = 9 37/56
-4x+3 = 23+6x -4x-6x = 23-3 -10x = 20 x = -2