Step 1.) Distribute
-x + (-1)(13) + (-1)(4x)= (-3)(5) + (-3)(-9x) + 2
-x -13 -4x= -15 + 27x +2
Step 2.) Combind like terms
-5x -13= 27x -13
Step 3.) All the x's on one side
-13= 32x-13
Step 4.) Solve
x=0
Answer:
There are 30 students in the class
Step-by-step explanation:
we can write a ratio as:
8:10 as 24:x
Writing this as an equation gives:
8
10
=
24
x
We can now solve for
x
while keeping the equation balanced:
10
x
×
8
10
=
10
x
×
24
x
10
x
×
8
10
=
10
x
×
24
x
x
×
8
=
10
×
24
8
x
=
240
8
x
8
=
240
8
8
x
8
=
30
x = 30
You could draw a circle for the first two and split it into 4. Shade in 1 section and label 25%. Then say that 25% is 1/4 of the circle. For 50%, draw another circle, and split it into 4 again. This time, shade in 2 sections. Label as 50%. Then say that 50% is 1/2 of a circle. Draw another circle and split it into 6 sections. Label as 150%. Then label that each section is 25% and a circle split in 6 at each section at 25% would be 150% for the whole circle.
I believe this is what you need:
x + -4 = -6 (Where x is represented by -2.)
Helpful? :D
First you would simplify the equation <span>(7x²+2x+5)+(3x²-8x-10) lets start with the first part
</span><span>(7x²+2x+5)
</span>7x² + 2x which = 49x + 2x which also = 51x Then you add the last part (+5)
51x + 5
Now you simplify the last part.
<span>(3x²-8x-10)
</span>3x²-8x which=9x - 8x which also = 1x or simply x Then add the last part (-10) Which you'll get x-10
51x + 5) + (x - 10) = 52x -5
so your answer is 52x - 5