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The answer is 163. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
400 + 86
86 !
124
77
Pi plus 86 equals 89.14
86 415
-12n - 9 = 77 Therefore, -12n = 77+9 = 86 Therefore, n = 86/-12 n = 7.16 recurring (that is, 7.16666..)
no it equals 228
127
it is 91
7 + 21 + 2 + 86 + 4 = 120