1)-1+8(7-6x)=2x+3
раскроем скобки
-1+56-48x = 2x+3
-50x+52 = 0
50x-52 = 0
50x = 52
x = 52/50
х=1,04
2)-3x+4=-10+5(-7-x)
-3x+4 = -10-35-5x
2x+49 = 0
2x = -49
x = -49/2
х=-24,5
1)-1+8(7-6x)=2x+3
раскроем скобки
-1+56-48x = 2x+3
-50x+52 = 0
50x-52 = 0
50x = 52
x = 52/50
х=1,04
2)-3x+4=-10+5(-7-x)
раскроем скобки
-3x+4 = -10-35-5x
2x+49 = 0
2x = -49
x = -49/2
х=-24,5