Answer:
x = 31
Step-by-step explanation:
x=31
first we simlify to get the simplist equation. 3x + 43 = 4x + 12. then 4x - 3x equalls and 43 - 12 equals 31.
a) 0.86602540378
b) 0.70710678118
c) 0.57735026919