Step-by-step explanation:
3d + 4(d-1) ; d=7
Plug in 7 for d.
3(7) + 4(7-1)
Then multiply and distribute.
21 + 28 - 4
Add like terms.
21 + 24
Add like terms.
45
Hope this is what you were asking for :)
Answer:
Step-by-step explanation:
3d + 4(d – 1)
=3(7) + 4(7 – 1)
=21 + 28 – 4
=21 + 24
=55
