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umka21 [38]
3 years ago
5

Solve for x d(-3+x)= kx+9

Mathematics
2 answers:
Lera25 [3.4K]3 years ago
6 0

x = (9 + 3d)/(d - k)

olga nikolaevna [1]3 years ago
4 0
1. Write the equation:
d(-3 + x) = kx + 9
2. "Open" the parenthesizes:
-3d + dx = kx + 9
3. Take kx to the left side, -3d to the right, everything with different sign (+ replace with - when transferring, - replace with +):
dx - kx = 9 + 3d
4. Factor x in the left side:
x(d - k) = 9 + 3d
5. Finally, divide the whole equation by (d - k):
x = (9 + 3d)/(d - k)
That's the final answer. Good luck!
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