7^2 +3[81-(4 6)] Help me

49+243-24=243-24=219
219+49=263

Is this right

4 answers

7^2 +3[81-(4 6)] Help me
49+243-24=243-24=219
219+49=263

Is this right
In the [81-(4 6)] part, why is there a space between the 4 and the 6?
7^2 +3[81-(4x6)] Is not
so, inside the parentheses, multiply first, as usual