Answers

2014-07-24T11:03:28+08:00
a)50 + 42÷6 - 4 x 5=N
=92÷2x5
=92÷10
=9.2

b)27 - 3 x 2 +15 ÷ 5=N
=27 - 6 +15 ÷ 5
=21+3
=24
1 5 1
2014-07-24T11:08:22+08:00
A)20+42/6-4*5=N
=50+42/6-20
=50+7-20
=57-20
=37

b)27-3*2+15/5=N
=27-6+15/5
=27-6+3
=21+3
=24

im just using PEMDAS .
P=Parenthesis
E=exponent
M=Multiplication
D=Division
A=Addition
S=Subtraction .
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