помогите плиз срочно уровнения 1) 3x-20=x+20
2) 7x+4=10x-5
3) 0.8y+1.4=0.4y-2.6
4) 0.6(x+7)=0.5(x-3)+6.8
5)-2(4-x)=7x+16
2) 10X - 7X = 4 + 5
3X = 9
X = 3
3) 0.8Y - 0.4Y = - 2.6 - 1.4
0,4Y = - 4
Y = - 10
4) 0.6X + 4.2 = 0.5X - 1.5 + 6.8
0.1 X = - 4.2 - 1.5 + 6,8
0.1X = 1.1
X = 11
5) - 8 + 2X = 7X + 16
5X = - 24
X = - 4.8
1) 2X = 40
X = 20
1)3Х-20=х+20 3х-х=20+20 2х=20 х=20\2 х=10