Question

Решите уравнения ) 1. 5x-130=0 2. 96-3x=0 4. 13x-1=51 5. -x+6=48 6. 1,3x=42+x 7. 8=15-0,2x 8. 0,15x+8=38 9. - 0,7x+3=52

Answer 1

1. 5x-130=0
5x=130
x=26

2. 96-3x=0
-3x= -96
x=32

4. 13x-1=51
13x=51+1
x=52:13
x=4

5. -x+6=48
-x=48-6
x= -42

6. 1,3x=42+x
1.3x-x=42
0.3 x=42
x=42:0.3
x=140

7. 8=15-0,2x
-0,2x=8-15
-0.2x= -7
x= -7:(-0.2)
x=35

8. 0,15x+8=38
0.15x=38-8
0.15x=30
x=200

9. - 0,7x+3=52
-0.7x=52-3
x= 49:(-0.7)
x= -70

Answer 2

1. 5x - 130 = 0 5x = 130 x = 130 / 5 x = 26

2. 96 - 3x = 0 3x = 96 x = 96 / 3 x = 32

3. 13x - 1 = 51 13x = 52 x = 52 / 13 x = 4

5. -x + 6 = 48 -x = 48 - 6 -x = 42 x = -42

6. 1.3x = 42 + x 1.3x - x = 42 0.3x = 42 x = 42 / 0.3 x = 140

7. 8 = 15 - 0.2x + 8 0.2x = 15 - 8 0.2x = 7 x = 7 / 0.2 x = 35

8. 0.15x + 8 = 38 0.15x = 38 - 8 0.15x = 30 x = 30 / 0.15 x = 200

9. -0.7x + 3 = 52 -0.7x = 52 - 3 -0.7x = 49 x = 49 / (-0.7) x = -70