1 answer:
Answer:
answer: 20
Step-by-step explanation:
(3x+11)+(5x+9)=180 <--- given
8x+20=180 <----- combine like terms
8x=160 <----- subtraction prop. of equality
x=20 <----- division prop. of equality
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0.21 is greater than 0.12 because it in the 20s