Question

1.[ 6+(-2)+(-9) ] - [ -5-(-4)+(-7) ]
2. suhu didlm kulkas sblm dhdpkn 29°C. setelah dhdpkn suhunya turun 3°C setiap 5menit. setelah 10menit suhu di dlm kulkas adalah..
help me, please

Answer 1

1) (6 - 2 - 9) - (-5 + 4 - 7)
= - 5 - (-8)
= - 5 + 8
= 3

2) 29⁰C - (3⁰C + 3⁰C)
= 23⁰C