In the case of unlike denominators, common denominators must be
created through multiplication by finding the least common multiple.
true or false

True

Step-by-step explanation:

You could use any common multiple, but using the least common multiple is easier and faster, which is why it is usually recommended. For example:

In order to add, you need to find the least common multiple, which would be 12. (and you can't forget, what you do to the bottom, you must do to the top as well)

However, this is only necessary with addition and subtraction, not multiplication or division.

your answer is b ^w^ hope i

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3