First you had to add by twelve from both sides of equation form.
Then simplify.
Next, add by four-f from both sides of equation form.
Simplify.
Then you divide by ten from both sides of equation form.
Finally simplify by equation.
Final answer:
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i thinks its b......................
Answer:
a) a = 12s
Step-by-step explaination:
A/3=7/10
21=10a
a=2.1
100a=100*2.1=210