15.12 that's what I think it is
Answer:
-4(5x - 9) + 6(2x + 5)
multiplication of:
(-).(-) = +
(-).(+) = -
(+).(-) = -
(+).(+) = +
-4(5x) -4(- 9) + 6(2x + 5)
(-)(+)4(5x) (-)(-)4(9) (+)(+) 6(2x) (+)(+)6( 5)
-20x + 36 + 12x + 30
-20x + 12x + 36 + 30
-8x + 66
Step-by-step explanation:
Answer: They serve as letters and words
Step-by-step explanation: If you knew your abc's you would know