Как решить 5(1-x)+8x=-2-(2x+3)
5(1-х) + 8х = -2 -(2х+3) 5*1 - 5*х +8х = -2 -2х -3 5 +3х = -5-2х 3х+2х=-5 -5 5х= -10 х= (-10) : 5 х = -2 проверим: 5( 1 - (-2)) + 8 *(-2) = -2 - (2 * (-2) + 3) 5(1+2) - 16 = -2 - (-4+3) 15 -16 = -2 -(-1) -1 = -2+1 -1 = -1
5(1-х)+8х=-2-(2х+3) 5-5х+8х=-2+2х-3 -5х+8х-2х=-2-3-5 х=-10