easy maths ..help me

1.
144x5\(20-8)+28x(30-10+6)-540\(108-28-20)
= 720 / 12 + 28 x 26 - 540 / 60
= 60 + 728 - 9
= 779

2.
86\(20+23)x38-18x(29-9)\12+7x8
= 86 / 43 x 38 - 18 x 20 / 12 + 56
76 - 30 + 56
= 102

1.144x5\(20-8)+28x(30-10+6)-540\(108-28-20)
=144x5\12+28x26-540\60
=144\12x5+728-9
=12x5+728-9
=60+728-9
=788-9
=777



2.86\(20+23)x38-18x(29-9)\12+7x8
= 86\46*38-18x20\12+56
=2*38-360/12+56
=76-30+56
=46+56
=102

我好想問你幾多年級

第一條答777ge人勁 "7"lo~~
788-9都計錯,我真係笑左出尼~~

我唔係答ge...只不過想笑下d無知ge人...~~

1.144X5\(20-8)+28X(30-10+6)-540\(108-28-20)
=144X5\12+28X26-540\60
=144\12X5+728-9
=12X5+728-9
=60+728-9
=788-9
=777

(by step )

2.86\(20+23)X38-18X(29-9)\12+7X8
= 86\46X38-18x20\12+56
=2X38-360/12+56
=76-30+56
=46+56
=102

(by step)

唔知岩唔岩喎!

1.144x5\(20-8)+28x(30-10+6)-540\(108-28-20)
=144x5\12+28x26-540\60
=144\12x5+728-9
=12x5+728-9
=60+728-9
=788-9
=777
(by step )

2.86\(20+23)x38-18x(29-9)\12+7x8
= 86\46*38-18x20\12+56
=2*38-360/12+56
=76-30+56
=46+56
=102
(by step)


if you have any problem again , you can email to me!
my [email protected]

1.144x5\(20-8)+28x(30-10+6)-540\(108-28-20)
=144x5\12+28x26-540\60
=144\12x5+728-9
=12x5+728-9
=60+728-9
=788-9
=777
(by step )

2.86\(20+23)x38-18x(29-9)\12+7x8
= 86\46*38-18x20\12+56
=2*38-360/12+56
=76-30+56
=46+56
=102
(by step)

I hope I can help you...^^

1.144x5\(20-8)+28x(30-10+6)-540\(108-28-20)
=144x5\12+28x26-540\60
=144\12x5+728-9
=12x5+728-9
=60+728-9
=788-9
=777
(by step )

2.86\(20+23)x38-18x(29-9)\12+7x8
= 86\46*38-18x20\12+56
=2*38-360/12+56
=76-30+56
=46+56
=102
(by step)