3(a-1)=4(2a+5)
You asked:
Solve the equation \(3 \cdot \left(a - 1\right) = 4 \cdot \left(2 a + 5\right)\) for the variable \(a\).
MathBot Answer:
The solution is: \[a = - \frac{23}{5} = -4.6\]
\[\begin{aligned}3 a - 3 &= 8 a + 20\\- 5 a &= 23\\a &= - \frac{23}{5}\end{aligned}\]