You can
put this solution on YOUR website!Solve using addition and multiplication principals.
5 + 4x < 21
The solution set is {x/x ??}
Start with the given inequality.
Subtract
from both sides.
Combine like terms on the right side.
Divide both sides by
to isolate
.
Reduce.
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Answer:
So the answer is
So the solution set is
Which in interval notation is
)
Solve the following system of equation
x + 4y = 2 (1)
x = 7 -4y (2)
Start with the given system
Plug in
into the first equation. In other words, replace each
with
. Notice we've eliminated the
variables. So we now have a simple equation with one unknown.
Combine like terms on the left side
Subtract 7 from both sides
Combine like terms on the right side
Since this equation is
never true for any y value, this means there are no solutions.
(