We calculate this like this:
where x is the desired number. 4 percent of x is 56
here i multiplied both sides by 100
I divided both sides by 4, then on the left hand side only x is left!
The answer is 1400
Answer:
x=25
Step-by-step explanation:
(x+40)+(3x+10)=6x
4x+50=6x
50=2x
25=x
Answer:
45
Step-by-step explanation:
3 square-root 5 times 3 square-root 5 equals 45
Answer: x=3 and y=−2
Step-by-step explanation:
x=−2y−1;4x−4y=20
Step: Solve x=−2y−1 for x:
Step: Substitute−2y−1 for x in 4x−4y=20:
4x−4y=20
4(−2y−1)−4y=20
−12y−4=20(Simplify both sides of the equation)
−12y−4+4=20+4(Add 4 to both sides)
−12y=24
−12y
−12
=
24
−12
(Divide both sides by -12)
y=−2
Step: Substitute−2 for y x=−2y−1:
x=−2y−1
x=(−2)(−2)−1
x=3(Simplify both sides of the equation)
-7 + x = 6x - 12
-7 +12 = 6x - x
5 = 5x
x = 1
hope this helps
