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The sum of two consecutive even numbers is given by [tex]\( a + b = 94 \)[/tex]. If [tex]\( b = a + 2 \)[/tex], what is [tex]\( a \)[/tex]?

Sagot :

To solve the problem of finding two consecutive even numbers [tex]\(a\)[/tex] and [tex]\(b\)[/tex] such that their sum is 94 and [tex]\(b\)[/tex] is [tex]\(a + 2\)[/tex], follow these steps:

1. Understand the Problem:
- We are given that [tex]\(a\)[/tex] and [tex]\(b\)[/tex] are two consecutive even numbers.
- We are given the relationship between [tex]\(a\)[/tex] and [tex]\(b\)[/tex]: [tex]\(b = a + 2\)[/tex].
- We are also given the equation: [tex]\(a + b = 94\)[/tex].

2. Set Up the Equations:
- From the relationship, [tex]\(b = a + 2\)[/tex].
- From the sum, [tex]\(a + b = 94\)[/tex].

3. Substitute [tex]\(b\)[/tex] in the Sum Equation:
- Substitute [tex]\(b = a + 2\)[/tex] into the sum equation [tex]\(a + b = 94\)[/tex]:
[tex]\[ a + (a + 2) = 94 \][/tex]

4. Simplify the Equation:
- Combine like terms:
[tex]\[ a + a + 2 = 94 \][/tex]
[tex]\[ 2a + 2 = 94 \][/tex]

5. Solve for [tex]\(a\)[/tex]:
- Isolate [tex]\(a\)[/tex] by first subtracting 2 from both sides of the equation:
[tex]\[ 2a + 2 - 2 = 94 - 2 \][/tex]
[tex]\[ 2a = 92 \][/tex]
- Divide both sides by 2 to solve for [tex]\(a\)[/tex]:
[tex]\[ \frac{2a}{2} = \frac{92}{2} \][/tex]
[tex]\[ a = 46 \][/tex]

6. Find [tex]\(b\)[/tex]:
- Use the relationship [tex]\(b = a + 2\)[/tex] to find [tex]\(b\)[/tex]:
[tex]\[ b = 46 + 2 \][/tex]
[tex]\[ b = 48 \][/tex]

Therefore, the two consecutive even numbers are [tex]\(a = 46\)[/tex] and [tex]\(b = 48\)[/tex].