Question

Q9)Find value of a, if :
15 (a - 4) - 2 (a - 9) + 5 (a +6) = 0​

Answer 1

Answer:

15(a-4) -2(a-9)+5(a+6)=0

15a-60-2a-18+5a+30=0

15a+5a-2a-60-18+30=0

18a-78+30=0

18a-48=0

18a=48

a=48/18

a=2.66

Answer 2

Answer a=2/3

Step-by-step explanation:

• 15(a-4)-2(a-9)+5(a+6)=0
• 15a-60-2a+18+5a+30=0
• 15a-2a+5a-60+18+30=0
• 20a-2a-60+48=0
• 18a-12=0
• 18a=12
• a=12/18
• a=2/3 answer.
• thanks