6.3x-2.9x+0.79=3
6.3х - 2.9х = 3-0.79
3.4х = 2.21
х = 2.21 : 3.4
х = 0.65
Пошаговое объяснение:
5(x+2)=x-2*(5-x) 3*(1-x)-(2-x)=2 14-(4+2x)=1+x 3-x=1-7*(x+1)
5x+10=1 3-3x-2+x=2 14-4-2x=1+x 3-x=1-7x-7
5x=1-10 1-2x=2 10-2x=1+x 3-x=-6-7x
5x=-9 -2x=2-1 -2x-x=1-10 -x+7x=-6-3
x=9/5 -2x=1 -2x=-9 6x=-9
x=1/2 x=3 x=-3/
6.3x-2.9x+0.79=3
6.3х - 2.9х = 3-0.79
3.4х = 2.21
х = 2.21 : 3.4
х = 0.65