Question

simplify the following ​

Answer 1

1.)21-12/3*2
=21-4*2
=21-8
=13

2.) 16+8/4-2*3
=16+2-2*3
=16+2-6
=18-6
=12

3.) 13-(12-6/3)
=13-(12-2)
=13-10
=3

4.) 19-[4+{16-(12-2)}]
=19-[4+{16-10)}]
=19-[4+6]
=19-10
=9

7.)5*(7-3)
=5*4
=20

8.)7+(2)2
=7+4
=11

9.)37-[5+{28-(19-7)}]
=37-[5+{28-12}]
=37-[5+16]
=37-21
=16

10.) 18-[24-{16(5-4-5)}]
=18-[24-{16*4}]
=18-[24-64]
=18-(-50)
=18+50
=68

5.)⬇️