Question

5x + 7t = 8, 7x - 4t = 25

Answer 1

Step-by-step explanation:

(5x + 7t = 8 ) × 4

(7x - 4t = 25) × 7

20x + 28t = 32

49x - 28t = 175

69x = 207

x = 207/69

x = 3

Putting the value of x in eq(i)

5x + 7t = 8

5×3 + 7t = 8

15 + 7t = 8

7t = 8-15

7t = -7

t = -7/7

t = -1

x = 3

t = -1

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