Ответ:
1)
- \(3x+7=0\); \(3x=-7\); \(x=-\frac{7}{3}\).
- \(13-100x=0\); \(100x=13\); \(x=0,13\).
- \(0,5x+0,15=0\); \(0,5x=-0,15\); \(x=-0,3\).
- \(8-0,8x=0\); \(0,8x=8\); \(x=10\).
2)
- \(7x-4=x-16\); \(6x=-12\); \(x=-2\).
- \(13-5x=8-2x\); \(5=3x\); \(x=\frac{5}{3}\).
- \(4y+15=6y+17\); \(-2y=2\); \(y=-1\).
- \(1,3p-11=0,8p+5\); \(0,5p=16\); \(p=32\).
- \(0,71x-13=-10-0,29x\); \(x=3\); \(x=3\).
- \(8c+0,73=6,1-8c\); \(16c=5,37\); \(c=0,335625\).
3)
- \(5x+3x-7=9\); \(8x=16\); \(x=2\).
- \(3y-5+y=11\); \(4y=16\); \(y=4\).
- \(48=11-9a-2\); \(48=9-9a\); \(-9a=39\); \(a=-\frac{13}{3}\).
- \(13-5x-11=6x\); \(2=11x\); \(x=\frac{2}{11}\).
4)
- \(7x+1-6x-3=5\); \(x-2=5\); \(x=7\).
- \(8x+11-13=9x-5\); \(8x-2=9x-5\); \(x=3\).
- \(2=3x-5-7+4x\); \(2=7x-12\); \(x=2\).
- \(8x+5=119+7-3x\); \(11x=121\); \(x=11\).
