4.2 - 0.3 • (X-1.8) = -81

Question

4.2 - 0.3 • (X-1.8) = -81

Answer 1

4,2 - 0,3 × (x - 1,8) = -81,
4,2 - 0,3x + 0,54 = -81,
4,74 - 0,3x = -81,
-0,3x = -81 - 4,74,
-0,3x = -85,74,
x = 285,8.