Briar asked in Science & MathematicsMathematics · 9 months ago

# Another maths question: 4/5 - 3/10 div 1/2 = ?

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• 9 months ago

i presume you are required to solve

the sum using paper and pencil.

3/10/1/2=3/5

4/5 -3/5 = 1/5

BODMAS is the sequence operations.

• 9 months ago

1).

4/5 - (3/10 / 1/2)

= 1/5

2).

(4/5 - 3/10) / 1/2

= 1

• Jim
Lv 7
9 months ago

4/5 - 3/10 / (1/2)

PEMDAS (BOMDAS) do division first

to divede, invert and multiply

4/5 - 3/10 *(2)

4/5 - 3/5 = 1/5

• ?
Lv 7
9 months ago

You need to use parentheses for clarity.

Do you mean 4/5 - 3/10 ÷ 1/2 ?

Or 4/5 - 3/10 ÷ (1/2) ?

Or (4/5 - 3/10) ÷ (1/2) ?

Or something else?

• Briar9 months agoReport

The question asked has shown no parentheses but assuming parentheses is used on division 1st.

• 9 months ago

I don't know what you wrote. Don't you know how to use parentheses?

• Briar9 months agoReport

Sorry but no parentheses was shown on the test paper question but I assume division 1st.

• Como
Lv 7
9 months ago

Assuming that you mean :-

4/5 - ( 3/10 / 1/2 ) = 4/5 - 3/5 = 1/5

Just in case you mean :-

( 4/5 - 3/10 ) / 1/2 = (5/10) / 1/2 = 1

PS

You must make clear what you mean.

Lv 7
9 months agoReport

You have omitted some parentheses, too. The 1/2 should be (1/2).

• 9 months ago

As written:

4/5 - (3/10) / (1/2)

Divide first, turn to multiplication of reciprocal:

4/5 - (3/10) * 2

4/5 - 3/5

Then subtract:

1/5

----

If you meant for the subtraction to be done first, then you need parenthesis around them:

(4/5 - 3/10) / (1/2)

(8/10 - 3/10) / (1/2)

(5/10) / (1/2)

(1/2) / (1/2)

(1/2) * 2

1

• Brian
Lv 7
9 months ago

(4/5) - (3/10) / (1/2)

= (8/10) - (3/10) / (1/2)

= (5/10) / (1/2)

= (1/2) / (1/2)

= 1

• 9 months ago

pemdas

8/10-6/10= 1/5