a ) 1027- 4 × $x^{}$ =175
4 × $x^{}$ = 1027 - 175
4 × $x^{}$ = 852
$x^{}$ = 852 ÷ 4
$x^{}$ = 213
B ) 720: [41 × (2 ×$x^{}$ -5)]= $2^{3}$ x 5
720 : [ 41 × (2 ×$x^{}$ -5)]= 8 × 5
720 : [ 41 × (2 ×$x^{}$ -5)]=40
82 × $x^{}$ = 720 : 40
82 × $x^{}$ - 205 = 18
82 × $x^{}$ = 18 + 205
82 × $x^{}$ = 223
$x^{}$ = 223 ÷ 82
$x^{}$ = $\frac{223}{82}$