Question

[5x(28:7+9)-7x8]x4=
24+{15:3+[16:(10-54:9)×3] }=
39:3+(240:[65-(32:8+6x9)+1] }=
3+2x{ 3+2x[3+2x(3+2)] }=​

Answer 1

a) 1) 28:7=4

2)4+9=13

3)5×13=65

4)7×8=56

5)65-56=9

6)9×4=36