Answer for the 1st equation:
Answer for the 2nd Equation:
Step-by-step explanation for 1st equation:
6*7-3^2*9+4^3 =
[6 * 7] - [3^2] * 9 + [4^3] =
42 - [9*9] + 64 =
42 - 81 + 64 =
-39 + 64 =
25
Step-by-step explanation for 2nd equation:
[-30/6] - [4^2]/[5-1] =
-5 - 16/4 =
-5 - 4 =
-9