Algebra distribution problem?
Compute brackets, remember that: (a+b)(c+d) = ac+ad+bc+bd = (a+b)c + b(c+d). (0.381)(0.05-2x)=x 0.381*0.05 - 0.381*(-2x) = x 0.01905-0.762x = x. Add 0.762x to both sides of the equation. Then: 0.01905-0.762x +0.762x = x+0.762x 0.01905 = 1.762x x = 0.01905/1.762 = 0.0108115778. Rounding off gives 0.011.