Question

40-{50-[2+3(4+5)]} Simplify.

Answer 1

19

Answer 2

40-{50-[2+3(4+5)]}

40-50+[2+3(4+5)]

40-50+2+3(4+5)

40-50+2+12+15

Answer 3

40-{50-[2+3(4+5)]}
=40-{50-[2+3(9)]}
=40-{50-[2+27]}
=40-{50-[29]}
=40-{21}
=19

Answer 4

40-50+2+12+15

40-50+4+10+15

40-50+9+10+10

40-50+9+20

60-50+9

10+9

Answer 5

19