3x + 12 - 5x = 22
-2x + 12 = 22
-2x = 10
x = -5
Write the equation out, x is going to be your unknown number.
Combine like terms.
We have to isolate x, so get rid of the 12 by subtracting it from both sides of the equation.
Divide by -2.
Answer:
0.0089
Step-by-step explanation:
Because when we want to change decimal as percents we need to replace the period on the left side 2 times. But when we want to change percent as a decimal, then we need to move the period 2 times on the right.
ex:
.72 decimal= 0.0072
Answer:
7 days
Step-by-step explanation:
