Answer:
0
Step-by-step explanation:
-2x+7=3
First you want to get the variable alone. To do that you need to subtract 7 from both sides
-2x+7(-7)=3(-7)
-2x=-4
Next you need to divide -2 on both sides to isolate the variable.
-2x/-2=-4/-2
-2/-2 is 0 and -4/-2 is <em>positive </em>2 because a negative divided by a negative is positive.
x=2
Since x=2 you can plug in 2 into 5x-10 to get the final answer.
5(2)-10
10-10
0
Answer:
Step-by-Step Solution
0.4 = 2/5 as a fraction
To convert the decimal 0.4 to a fraction, just follow these steps:
Step 1: Write down the number as a fraction of one:
0.4 = 0.41
Step 2: Multiply both top and bottom by 10 for every number after the decimal point:
As we have 1 numbers after the decimal point, we multiply both numerator and denominator by 10. So,
0.41 = (0.4 × 10)(1 × 10) = 410.
Step 3: Simplify (or reduce) the above fraction by dividing both numerator and denominator by the GCD (Greatest Common Divisor) between them. In this case, GCD(4,10) = 2. So,
(4÷2)(10÷2) = 2/5 when reduced to the simplest form.
Answer:
x = 5
Step-by-step explanation:
4x = 7 - 8x - 27
1) Combine like terms (7 and -27). So, 7 + (-27) = -20.
4x = 8x - 20
2) Subtract 8x from both sides of the equation. So, 4x - 8x = -4x.
-4x = -20
3) Divide both sides by -4. So, -20 / -4 = 5.
x = 5
