Найду корень уравнения: 1,4(3-х)=4,7+0,9(х+2)
7*(3 - x) 47 9*(x + 2) --------- = -- + --------- 5 10 10
(7/5)*(3-x) = (47/10)+(9/10)*(x+2)
7/53-x = (47/10)+(9/10)*(x+2)
7/53-x = 47/10+9/10x+2
21/5 - 7*x/5 = 13/2 + 9*x/10
x = 23/10 / (-23/10)
x1 = -1.0