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What is the solution to the equation: (1/2)x + 3/2(x + 1) - 1/4 = 5?

a. 5/2
b. 13/8
c. 15/8
d. 17/8

User Cgsd
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1 Answer

3 votes

Final answer:

The solution to the equation (1/2)x + 3/2(x + 1) - 1/4 = 5 is 15/8, which corresponds to option (c). This is found by combining like terms, obtaining a common denominator, performing subtraction, and finally dividing by 2.

Step-by-step explanation:

To solve the equation (1/2)x + 3/2(x + 1) - 1/4 = 5, let's start by distributing the 3/2 across the x + 1. This gives us:

(1/2)x + (3/2)x + (3/2)*1 - 1/4 = 5

Now combine like terms:

(1/2 + 3/2)x + 3/2 - 1/4 = 5

Which simplifies to:

2x + 3/2 - 1/4 = 5

To combine the fractions, we need a common denominator. As we know, the lowest common denominator between 2 and 4 is 4, so we rewrite the fractions:

2x + 6/4 - 1/4 = 5

Combine the fractions:

2x + (6/4 - 1/4) = 5

2x + 5/4 = 5

Subtract 5/4 from both sides to get:

2x = 5 - 5/4

To subtract the fraction from 5, we rewrite 5 as 20/4:

2x = 20/4 - 5/4

2x = 15/4

Divide both sides by 2:

x = (15/4) / 2

x = 15/8

Therefore, the solution to the equation is 15/8 or option (c).

User ASemy
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