what is the answer for t+1-4t+8=21
collect your like terms
t+1-4t+8=21
-3t + 9 = 21
subtract 9 from both sides
-3t = 12
divide by -3
t = -4
t+1-4t+8=21
-3t + 9 = 21
-3t = 12
t = -4
To find the value of t in the equation t + 1 - 4t + 8 = 21, we need to solve for t.
Step 1: Combine like terms:
Combine t and -4t, as well as 1 and 8, to get:
-3t + 9 = 21.
Step 2: Isolate the variable term:
To isolate the t term, subtract 9 from both sides of the equation:
-3t + 9 - 9 = 21 - 9,
which simplifies to:
-3t = 12.
Step 3: Solve for t:
To find the value of t, divide both sides of the equation by -3:
(-3t) / -3 = 12 / -3,
which simplifies to:
t = -4.
So, the value of t that satisfies the equation t + 1 - 4t + 8 = 21 is t = -4.