Question

5x+8/3+11x-1/6=-1 4x-5/7 - 9x-25/2=0 4x+9/5 - 4+3x/2=4 решите пожалуйста

Answer 1

-7 * 0.3 * x - (-7) * 8 + 3 * 0.4 * x + 3 * 5 = 8
-2.1 * x + 56 + 1.2 * x + 15 = 8
-0.9 * x = 8 - 15 - 56
-0.9 * x = -63
x = -63 / (-0.9)
x = 70