$\text{f) -4 + | -12 | + 104 + ( -12 )}$
$\text{= (-4+104) + ( 12-12 )}$
$\text{= 100}$
$\text{g) - 359 + 181 + (-123) + 350 + (-172)}$
$\text{= (-359+350) + (181-172) + (-123)}$
$\text{= -9 + 9 + (-123)}$
$\text{= -123}$
$\text{i) | x | = 3³}$
$\text{| x | = 27}$
$\text{x = ± 27}$
$\text{j) -20 + 27 ÷ 3² + 12 . 7}$
$\text{= -20 + 27 ÷ 9 + 84}$
$\text{= 64 + 3 }$
$\text{= 67}$
$\text{k) [ ( 8x - 14 ) ÷ 2 -1 ] . 41 = 451}$
$\text{( 8x - 14 ) ÷ 2 -1 = 451 ÷ 41}$
$\text{( 8x - 14 ) ÷ 2 -1 = 11}$
$\text{( 8x - 14 ) ÷ 2 = 11 + 1}$
$\text{( 8x - 14 ) ÷ 2 = 12 }$
$\text{ 8x - 14 = 12 . 2}$
$\text{ 8x - 14 = 24}$
$\text{ 8x = 24 + 14}$
$\text{ 8x = 38}$
$\text{ x = 38 ÷ 8}$
$\text{ x = $\frac{19}{4}$ }$
$\text{m) $5^{100}$ . $5^{120}$ ÷ $5^{218}$ + | -4 | - | 7-10 | }$
$\text{= $5^{220}$ ÷ $5^{218}$ + 4 - |-3|}$
$\text{= $5^{2}$ + 4 - 3}$
$\text{= 25 + 4 -3}$
$\text{= 26}$
