Answer:
Step-by-step explanation:
(a) We are to solve 4 = tx for x. Isolate x by dividing both sides by t:
tx 4
---- = ----
t t
This yields the formula x = 4/t
(b) If gh = 7x and we want a formula for x, we divide both sides by 7 to isolate x:
gh 7x
------ = ----- or x = gh/7
7 7
(c) To solve 2d + x = w for x, subtract 2d from both sides. We get:
x = w - 2d
