Question

No 6-7 tolong selesaikan. 20 poin cepat

Answer 1

6.
(5x-7)/2 = 7+6x |x2
5x-7 = 14 + 12x
-7 - 14 = 12x-5x
-21 =7x
x=-3 (a)

7.
3x-5 = 3/5 (x+4) |x5
15x-25 = 3x+12
15x-3x = 12+25
12x = 37
x = 37/12

nilai dari 2x-5 adalah
2(37/12) - 5 = 1 1/6 (a)

Answer 2

6.

7.