15·0.8 + x = 30·0.9 --> x = 15
C. is the correct answer
It is A because you subsitute the x in the equation A) (2x-8)(7x+5)=0 x=4 x=5,7 (fraction)
subtitute the x now and you get
(2(4)-8)(7(-5,7)+5) = 0
Answer:
2nd and 3rd
Step-by-step explanation:
im pretty sure you dont need exponents for this bud
3x-x-4x+4x
2x+0
2x