Question

2x-15=13,7y-25=45,130-4x=70,49-3x=34,9y-89=55,74-8z=2

Answer 1

Ответ:

Пошаговое объяснение:

2x-15=13

2х=28

х=14

7y-25=45,

7у=70

у=10

130-4x=70,

-4х=-60

-х=15

х= -15

49-3x=34,

-3х=-15

х= 5

9y-89=55,

9у= 144

у=16

74-8z=2

-8z=-72

z = 9

Answer 2

It looks like you have a system of equations. Let's solve each equation one by one:

1. 2x - 15 = 13: Add 15 to both sides: 2x = 13 + 15 2x = 28 Divide both sides by 2: x = 28 / 2 x = 14

2. 7y - 25 = 45: Add 25 to both sides: 7y = 45 + 25 7y = 70 Divide both sides by 7: y = 70 / 7 y = 10

3. 130 - 4x = 70: Subtract 130 from both sides: -4x = 70 - 130 -4x = -60 Divide both sides by -4: x = -60 / -4 x = 15

4. 49 - 3x = 34: Subtract 49 from both sides: -3x = 34 - 49 -3x = -15 Divide both sides by -3: x = -15 / -3 x = 5

5. 9y - 89 = 55: Add 89 to both sides: 9y = 55 + 89 9y = 144 Divide both sides by 9: y = 144 / 9 y = 16

6. 74 - 8z = 2: Subtract 74 from both sides: -8z = 2 - 74 -8z = -72 Divide both sides by -8: z = -72 / -8 z = 9

So, the solutions to the equations are: x = 14 y = 10 x = 15 x = 5 y = 16 z = 9