3-4x=-8x+9
-6x=-4
x=-4/6
4х+8х=-3+9
12х=6
х=12/6
х=6
3 - 4x = - 8x + 9 -4x +8x = 9 - 3 4x = 6 x = 6 / 4 x = 1.5 3x - 10 = 2 + 6 ( 5 + 4x) 3 x - 10 = 2 + 30+24 x 3x-24x=2 + 30 +10 - 21 x = 42 x = 42 / ( - 21) x = -2 Удачи)))
а второе :
-4x+8x=9-3 3x-10=2+30+24x 4x=6 3x-24x=2+30+10 x=6:4 -21x=42 x=3/2 x=42:(-21) x=-2