Solve y=13*9-3/2*9^2

$$y = 13 \cdot 9- \frac{ 3 }{ 2 } \times { 9 }^{ 2 }$$

Solve for y

$$y = -\frac{9}{2} = -4\frac{1}{2} = -4.5$$

Steps for Solving Linear Equation

Multiply 13 and 9 to get 117.

$$y=117-\frac{3}{2}\times 9^{2}$$

Calculate 9 to the power of 2 and get 81.

$$y=117-\frac{3}{2}\times 81$$

Express \frac{3}{2}\times 81 as a single fraction.

$$y=117-\frac{3\times 81}{2}$$

Multiply 3 and 81 to get 243.

$$y=117-\frac{243}{2}$$

Convert 117 to fraction \frac{234}{2}.

$$y=\frac{234}{2}-\frac{243}{2}$$

Since \frac{234}{2} and \frac{243}{2} have the same denominator, subtract them by subtracting their numerators.

$$y=\frac{234-243}{2}$$

Subtract 243 from 234 to get -9.

$$y=-\frac{9}{2}$$

Assign y

$$y≔-\frac{9}{2}$$