Question

1)63•(у-66)=252 2)518-(х+21)=219 3)(а-93)+286=524 4)7у-у+15=105 5)21х-4х+7х+21=93 Решите уравнения срочно

Answer 1

1) 63у-4158=252
у=4158+252/63
у=70
2) 518-х-21=219
-х=219-518+21
-х=-278
х=278
3) а-93+286=524
а=524-286+93
а=331
4) 7у-у+15=105
6у=90
у=15
5) 21х-4х+7х+21=93
24х=72
х=3

Answer 2

Solving the Equations

1) 63•(у-66)=252

To solve for y, we can start by simplifying the equation: 63•(у-66)=252 63y - 4158 = 252 63y = 2410 y = 2410 / 63 y = 38.254 So, the solution for y is y = 38.254.

2) 518-(х+21)=219

Let's solve for x: 518 - (x + 21) = 219 518 - x - 21 = 219 497 - x = 219 -x = 219 - 497 -x = -278 x = -(-278) x = 278 Therefore, the solution for x is x = 278.

3) (а-93)+286=524

Solving for a: (a - 93) + 286 = 524 a - 93 + 286 = 524 a + 193 = 524 a = 524 - 193 a = 331 Hence, the solution for a is a = 331.

4) 7у-у+15=105

Let's find the value of y: 7y - y + 15 = 105 6y + 15 = 105 6y = 105 - 15 6y = 90 y = 90 / 6 y = 15 So, the solution for y is y = 15.

5) 21х-4х+7х+21=93

Solving for x: 21x - 4x + 7x + 21 = 93 24x + 21 = 93 24x = 93 - 21 24x = 72 x = 72 / 24 x = 3 Therefore, the solution for x is x = 3.

These are the solutions for the given equations. If you have any more questions or need further assistance, feel free to ask!