Question

Simplify each expressions:
a) -72÷8+(-6)-2
b) -4+(-32)÷(-4×5)

Answer 1

$\bf -72\div 8+(-6)-2\implies \stackrel{\mathbb{PEMDAS}}{-72\div 8-6-2}\implies -9-6-2 \\\\\\ -15-2\implies -17\\\\ -------------------------------\\\\ -4+(-32)\div(-4\times 5)\implies \stackrel{\mathbb{PEMDAS}}{-4+(-32)\div(-20)} \\\\\\ -4+1.6\implies -2.4$