Answer:
320 or 40 sorry if I´m wrong
Step-by-step explanation:
20%=8
10%=?
by cross multiplications,
10×8=80
80÷20=4
Hence the answer is 4.
(13x – 4) + (–6x + 15) =
13x - 4 - 6x + 15 =
7x + 11