3d+8=2d-7
3d+8-8=2d-7-8 (substract 8 on both side)
3d=2d-15
3d-2d=2d-2d-15 (substract 2d on both side)
d=-15
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No. 1a and 3d are linear, but 2bc is not. ■
Call the unknown value of (x - y) d. Then x = y + d; from the problem statement, y + d + 2(y + d) +5 = y + 2y; expanding yields y + d + 2y + 2d + 5 = y + 2y; (y + 2 y) can be subtracted from both sides and terms in d collected to result in 3d + 5 = 0; 3d = -5; d = -5/3.
Some 3D shapes are cones, cubes, pyramids, and cylinders.
Its main application is in finding the volumes of 3D shapes
The volume of any 2-dimensional object is always zero (0).but if it is not a 2d then it is a 3d and the volume of that would be bxh divided by3.