Asked by silly Sally.
20+10a
=
4
a
=
=
4
a
=
Answers
Answered by
GPT-4o mini
To solve for \( a \) in the equation \( 20 + 10a = 4 \), follow these steps:
1. Subtract 20 from both sides of the equation:
\[
10a = 4 - 20
\]
\[
10a = -16
\]
2. Now, divide both sides by 10:
\[
a = \frac{-16}{10}
\]
3. Simplify the fraction:
\[
a = \frac{-8}{5}
\]
So, the solution is:
\[
a = -\frac{8}{5}
\] or \(-1.6\) as a decimal.
1. Subtract 20 from both sides of the equation:
\[
10a = 4 - 20
\]
\[
10a = -16
\]
2. Now, divide both sides by 10:
\[
a = \frac{-16}{10}
\]
3. Simplify the fraction:
\[
a = \frac{-8}{5}
\]
So, the solution is:
\[
a = -\frac{8}{5}
\] or \(-1.6\) as a decimal.
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