Question

[(21+42)×3]+[4×(18+12)]=

Answer 1

[(21+42)3] +[4(18+12)]
189+120
309

Answer 2

First you have to do the problem in the perenteces, so 21 + 42 = 63. Now we have to do 63 x 3 which is 189. We have to do the second one now so 18 + 12 is 30, and now we times that by 4, so know it is 120. Lastly we add 189 + 120 which gives us an answer of 309.

It is 309.