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If $8 x + 7 y = 38, 3 x - 5 y = - 1$ then 'x' value ?

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6.5

answer is B.

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Detailed Solution

Step 1: Eliminate y by making coefficients of y same.
Multiply Equation 1 by 5:
→ 40x + 35y = 190
Multiply Equation 2 by 7:
→ 21x - 35y = -7

Step 2: Add the two equations:
(40x + 35y) + (21x - 35y) = 190 - 7
→ 61x = 183

Step 3: Solve for x:
x = 183 ÷ 61 = 3

Final Answer: x = 3

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