Question

(y+6)-2=15 2(a-5)=24 3(25+b)+15=135

Answer 1

1) (у+6)-2=15, -2 перенесем в правую часть, сменив знак.
у+6=15+2,
у+6=17,
у=17-6,
у=11.
2) 2(а-5)=24, вычислим множитель в скобках.
а-5=24:2,
а-5=12,
а= 12+5,
а=17.
3)3(25+b)+15=135, вычислим первое слагаемое.
3(25+b)= 135-15,
3(25+b)= 120, вычислим выражение в скобках,
25+b= 120:3,
25+b=40,
b=40-25,
b=15.

Answer 2

Let's solve each equation step by step:

1. (y + 6) - 2 = 15

Let's simplify the equation: y + 6 - 2 = 15 y + 4 = 15

Now, isolate the variable y: y = 15 - 4 y = 11

So the solution to the first equation is y = 11.

2. 2(a - 5) = 24

Let's simplify the equation: 2a - 10 = 24

Now, isolate the variable a: 2a = 24 + 10 2a = 34 a = 34/2 a = 17

So the solution to the second equation is a = 17.

3. 3(25 + b) + 15 = 135

Let's simplify the equation: 75 + 3b + 15 = 135

Combine like terms: 90 + 3b = 135

Now, isolate the variable b: 3b = 135 - 90 3b = 45 b = 45/3 b = 15

So the solution to the third equation is b = 15.

Therefore, the solutions to the given equations are: y = 11, a = 17, and b = 15.