Answer:
1. 5x-11 = -16 so x= -1
2. 12x -8 = 48 so x=56/12
3. 5x +2 = 13 so. x= -3
4. 7x +11 = 81 so x = 10
5. 3x -2 = -15 so. x= -13/3
6. 5x + 2 = 35 so. x = 33/5
Answer:
Step-by-step explanation:
<u>Let the number be x</u>
- 380% of x is 99
- x*3.8 = 99
- x = 99/3.8
- x = 26 rounded to the nearest whole number
Answer:
w= -9/8
Step-by-step explanation:
-1/3w -3/5 = 1/5w
+1/3w +1/3 w
-3/5=1/5w+1/3w
Make common denominators to combine like terms of the right
-3/5=1/5w+1/3w
*3 *5
-3/5=3/15w+5/15w
-3/5=8/15w
multiply both sides by the reciprocal of 8/15 which is 15/8
-3/5*15/8=8/15w*15/8
* ----> cross reduce 5 in the denominator becomes 1 and 15 in the numerator becomes 3
* -----> now multiply across
w= -9/8
Answer:
x = 4
Step-by-step explanation:
20x + 12 = 22x +4
12 - 4 = 22x - 20x
8 = 2x
4 = x
Answer:
3x^2 +14x-5
Step-by-step explanation:
(3x-1)(x+5)
We need to FOIL
first 3x*x =3x^2
outer 3x*5 = 15x
inner -1*x = -x
last -1*5 =-5
Add it together
3x^2 +15x-x-5
Combine like terms
3x^2 +14x-5