Question

1)9b+6b-15=615 2)2a+123a+97=472 3)17x-x+5x-19=170 4)73y-y-22y+40=190

Answer 1

1)42 2)3 3)9 4)3 Все верно

Answer 2

1. To solve for b: Combine like terms on the left side of the equation: 9b + 6b - 15 = 615 15b - 15 = 615

Add 15 to both sides to isolate the variable: 15b = 630

Divide both sides by 15: b = 42

Therefore, b = 42 is the solution to the equation.

2. To solve for a: Combine like terms on the left side of the equation: 2a + 123a + 97 = 472 125a + 97 = 472

Subtract 97 from both sides to isolate the variable: 125a = 375

Divide both sides by 125: a = 3

Therefore, a = 3 is the solution to the equation.

3. To solve for x: Combine like terms on the left side of the equation: 17x - x + 5x - 19 = 170 21x - 19 = 170

Add 19 to both sides to isolate the variable: 21x = 189

Divide both sides by 21: x = 9

Therefore, x = 9 is the solution to the equation.

4. To solve for y: Combine like terms on the left side of the equation: 73y - y - 22y + 40 = 190 50y + 40 = 190

Subtract 40 from both sides to isolate the variable: 50y = 150

Divide both sides by 50: y = 3

Therefore, y = 3 is the solution to the equation.