Question

5) 7y - 25 45;5) 130 - 4х = 70;​

Answer 1

$7y - 25 = 45 \\ 7y = 45 + 25 \\ 7y = 70 \\ y = 70 \div 7 \\ y = 10$

$130 - 4x = 70 \\ - 4x = 70 - 130 \\ - 4x = - 60 \\ x = - 60 \div ( - 4) \\ x = 15$

Answer 2

7у-25=45
7у=45+25
7у=70
у=70:7
у=10
Ответ:10

130-4х=70
4х=130-70
4х=60
х=60:4
х=15
Ответ 15

Answer 3

It seems like you have two equations. Let's solve each of them:

1. 7y - 25 = 45

To solve for y, add 25 to both sides of the equation:

7y - 25 + 25 = 45 + 25 7y = 70

Now, divide both sides by 7 to isolate y:

7y / 7 = 70 / 7 y = 10

So, the solution to the first equation is y = 10.

2. 130 - 4x = 70

To solve for x, subtract 130 from both sides of the equation:

130 - 4x - 130 = 70 - 130 -4x = -60

Now, divide both sides by -4 to isolate x. When you divide by a negative number, remember to change the direction of the inequality sign:

(-4x) / (-4) = (-60) / (-4) x = 15

So, the solution to the second equation is x = 15.