Решите уравнения4(2-3х)=-7х+10-4(5-4х)=х+1-4(-7+6х)=-9х-5-6(9-5х)=9х+9-3(1+4х)=-4х-5

Question

Решите уравнения
4(2-3х)=-7х+10
-4(5-4х)=х+1
-4(-7+6х)=-9х-5
-6(9-5х)=9х+9
-3(1+4х)=-4х-5

Answer 1

4(2-3х)= -7х+10      8 - 12X = - 7X + 10    5X = - 2    X = - 2/5
-4(5-4х)=х+1          - 20 + 16X = X + 1      15X = 21    X = 21/15 = 7/5 = 1 2/5
-4(-7+6х)=-9х-5      28 - 24X = - 9X - 5    15X = 33      X =  33/15 = 11/5 = 2 1/5
-6(9-5х)=9х+9        - 56 + 30X = 9X + 9      21X = 65    X = 65/21 = 3 2/21
-3(1+4х)=-4х-5        - 3 - 12X = -4X - 5    2 = 8X  X = 2/8 = 1/4

Answer 2

1. 8-12x=-7x+10
-12x+7x=10-8
-5x=2
x=-2/5
x=-0,4
2. -20+16x=x+1
16x-x=1+20
15x=21
x=1,4
3. 28-24x=-9x-5
24x+9x=-5-28
33x=-33
x=-1
4. -54+30x=9x+9
30x-9x=9+54
21x=63
x=3
5. -3-12x=-4x-5
-12x+4x=5+3
-8x=8
x=-1