Question

13. 20 - 3x - 11 = 117 - 3x - 12x 14. 9 (x-4) - (x-9) = 9. tolong dijawab yaa pake cara :)) tolong banget makasih ya kalian luar biasa/?

Answer 1

13. 20-3x-11=117-3x-12x
= -3x+3x+12x = 117-20+11
= 12x = 108
= x = 9

14. 9x-36-x+9 = 9
= 9x-x = 9+36-9
= 8x = 36
= x = 4,5

(Mohon koreksi jika ada kesalahan/?/)