i only know the answer for the second question. the answer is20 11-3=8 8*5=40 40-30=10 10*2=20 the first one is 48 1+2=3 3*4=12 12+3=15 15+1=16 16*3=48
The answer of question #1 is 48. To solve this, first you have to solve the (2+1) and that equals 3, now you solve 4(2+1), and that equals 12. Next, you solve the [4(2+1)+3] and that equals 15. Then, you solve {1+[4(2+1)+3} and that equals 16. Lastly, 3{1+[4(2+1)+3} equals 3 times 16=48.