Subtract 7a from both sides giving you 10=-5a and divide everything by 5. This gives you a=-2
For each if the differential equation given in Exercises 1 to 12 find the General Solution. xLogx

+y =

Logx...... Hope This Helps
For the cylinder on the left-hand-side,

now, for the triangular prism on the right-hand-side,
notice is really just 2 triangles and 3 rectangles, stacked up to each other at the edges.
the triangles have a base of 4, and a height of 1.5.
the rectangle on the left and the one on the right is a 6x2.5 rectangle.
the rectangle at the bottom, is a 4x6 rectangle.
adding their areas, is the area of the prism,
By using the rule -b/2a —> 12/-6= -2