Question

simplify:-[72+(9)]÷[(-28)+7]
full answer
please answer ​

Answer 1

Answer:

$\huge{\boxed{\sf{\frac{ - 27}{7}}}}[tex]\\ [tex](72 + 9) \div ( - 28 + 7) \\ = 81 \div ( - 21) \\ = \frac{81}{ - 21} \\ = \frac{81}{ - 1 \times 21} \\ = \frac{81 \div 3}{ - 1 \times 21 \div 3} \\ = \frac{27}{ - 1 \times 7} \\ = \frac{27 \times - 1}{ - 1 \times - 1 \times 7} \\ = \frac{ - 27}{7} \\ it \: is \: the \: answer \: \\ hope \: it \: helps.$

Answer 2

$\small \sf \orange {[72 + (9)] \div[( - 28) + 7] }$

$\small \sf \pink{[72 + 9] \div [ - 21]}$

$\small \sf \red{[81]\div[ - 21] }$

$\small \sf \blue{ \frac{ \cancel{81}}{ \cancel{ - 21}} = \frac{41}{ - 11} }$

$\tt \purple{hence \: the \: answer \: is \: \frac{41}{ - 11} }$