Question

3x + 5y + 6z = 104
9x + 3y + 8z = 164
Then find 4x + 8y - 3z.


No need any irrelevant answers​

Answer 1

By trail and error method,

we get x = 8, y = 4 and z = 10

→ 3x + 5y + 6z = 104

3(8) + 5(4) + 6(10) = 104

24 + 20 + 60 = 104

104 = 104

→ 9x + 3y + 8z = 164

9(8) + 3(4) + 8(10) = 164

72 + 12 + 80 = 164

164 = 164

So, 4x + 8y - 3z

4(8) + 8(4) - 3(10)

32 + 32 - 30

34

Therefore, answer is 34.

Answer 2

$\huge\bf\underline{\underline{GIVEN:-}}$

3x + 5y + 6z = 104

9x + 3y + 8z = 164

$\huge\bf\underline{\underline{TO \ FIND:-}}$

4x + 8y - 3z

$\huge\bf\underline{\underline{SOLUTION:-}}$

Use trail and error method,

then,

we get the values that x = 8, y = 4 and z = 10

$\implies$3x + 5y + 6z = 104

$\implies$3(8) + 5(4) + 6(10) = 104

$\implies$24 + 20 + 60 = 104

$\implies\underline{104 = 104}$

and,

$\implies$9x + 3y + 8z = 164

$\implies$9(8) + 3(4) + 8(10) = 164

$\implies$ 72 + 12 + 80 = 164

$\implies\underline{ 164 = 164}$

then, we have to find 4x + 8y - 3z

$\implies$4x + 8y - 3z

$\implies$4(80) + 8(4) - 3(10)

$\implies$32 + 32 - 30

$\implies$64 - 30

$\implies\boxed{\boxed{34}}$

Therefore, the "34" is the answer.

BELATED WISH YOU MANY MORE HAPPY RETURNS OF THE DAY YASHU❤☺