Question

2/15(b+5)-3/10(5b-1)=4

Answer 1

Ответ:

Пошаговое объяснение:

2/15b+2/3-1.5b+3/10=4

4b+29-45b=120

-41b=91

B=-91/41

Answer 2

To solve the equation 2/15(b+5)-3/10(5b-1)=4, we can follow these steps:

1. Simplify both sides of the equation by multiplying through by the least common multiple of the denominators, which is 30. This will eliminate the fractions and give us an equation in terms of whole numbers.

2/15(b+5) * 30 = 4 * 30

• 4/15(b+5) * 30 = 4 * 30
• 3/10(5b-1) * 30 = 4 * 30

Simplifying the above expression gives us:

4(b + 5) - 9(5b - 1) = 120

2. Distribute the coefficients to simplify the expression:

4b + 20 - 45b + 9 = 120

3. Combine like terms on the left-hand side of the equation:

-41b + 29 = 120

4. Subtract 29 from both sides of the equation:

-41b = 91

5. Divide both sides by -41 to isolate b:

b = -91/41

Therefore, the solution to the equation 2/15(b+5)-3/10(5b-1)=4 is b = -91/41.