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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$a 1 + 18 + 9 a + 1 + 5 + 20$$

Evaluate

$9a+a_{1}+44$

Solution Steps

Add $18$ and $1$ to get $19$.

$$a_{1}+19+9a+5+20$$

Add $19$ and $5$ to get $24$.

$$a_{1}+24+9a+20$$

Add $24$ and $20$ to get $44$.

$$a_{1}+44+9a$$

Differentiate w.r.t. a_1

$1$