Question

15+15×2+15×7—100

Answer 1

15 + 15x2 +15x7 -100

= 15 x( 1+2+7) -100

= 15 x 10 -100

= 150 -100 = 50 

Answer 2

15+15x2+15x7-100

=15x(1+2+7)-100

=15x10-100

=150-100

=50

Answer 3

15+15x2+15x7-100=15+30+105-100=45+105-100=150-100=50

Answer 4

15 + 15 x 2 + 15 x 7 - 100

= 15 x ( 1 + 2 + 7 ) - 100

= 15 x 10 - 100

= 150 - 100

= 50

Answer 5

    15+15x2+15x7-100

=  15x1+15x2+15x7-100

=  15x(1+2+7)-100

=   15x10-100

=   150-100

=       50