Mala is y years old. Her sister is 4 years older than mala . Write expréssion in simplest form that represents the sum of ages o f the sisters .
1 answer:
Answer:
Step-by-step explanation:
Let
y --->Mala's age
x---> sister's age
we know that
---> equation A
so
The sum of ages of the sisters is
substitute equation A in the expression of the sum of ages
simplify
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