a. x * (135 + 865 ) = 85000
x * 1000 = 85000
x=85000 : 1000
x=85
b.1754 + ( x : 35 ) = 6416
x : 35 = 6416 - 1754
x : 3 5 = 4662
x = 4662 *35
x = 163170
a, x * 135 + x * 865 = 85000
x*(135+865)=85000
x*1000=85000
x=85000:1000
x=85
b, 1754 + x : 35 = 6416
x:35=6416-1754
x:35=4662
x=4662*35
x=163170
a . x * 135 + x * 865 = 85000
x * (135 + 865) = 85000
x * 1000 = 85000
x = 85000 : 1000
x = 850
b . 1754 + x : 35 = 6416
x : 35 = 6416 - 1754
x : 35 = 4662
x = 4662 : 35
x = 133,2