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WITCHER [35]
3 years ago
13

I don’t know how to answer this?

Mathematics
2 answers:
maksim [4K]3 years ago
8 0

Answer:

SOLUTION SET ={a/a≥20}

Step-by-step explanation:

\frac{2a}{5}-2\geq\frac{a}{4}+1

adding 2 on both sides

\frac{2a}{5}-2+2\geq \frac{a}{4}+1+2

now subtracting \frac{a}{4} on both sides

\frac{2a}{5}-\frac{a}{4}\geq  3

takig LCM as 20\\\frac{8a}{20}-\frac{5a}{20}\geq 3

\frac{3a}{20}\geq   3

by cross-multiplication

3a≥3×20

3a≥60

dividing 3 on both sides

3a/3≥60/3

a≥20

SOLUTION SET ={a/a≥20} is the answer

i hope this will help you :)

dalvyx [7]3 years ago
3 0
Answer: a bigger or equal to 20

Explanation:

2a/5 - 2 _> a/4 + 1

8a/20 - 40/20 _> 5a/20 + 20/20

8a - 40 _> 5a + 20

3a _> 60

a _> 20
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