Answer:
x = -1
Step-by-step explanation:
The first step is get rid of the numbers outside this (). So we will get
20+8x=9x+21 (multiplication) And we can get rid of one side of x by subtract 8x on both sides, an then we will get 20= x+21
And we can move the numbers to one side by subtract 21 on each side, and we will get -1=x
And rewrite it:
x = -1
That's the answer.
Answer:
x = -4.36364
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
Step-by-step explanation:
<u>Step 1: Define Equation</u>
3.5(x + 12) = -2x + 18
<u>Step 2: Solve for </u><em><u>x</u></em>
- Distribute 3.5: 3.5x + 42 = -2x + 18
- Add 2x on both sides: 5.5x + 42 = 18
- Isolate <em>x</em> term: 5.5x = -24
- Isolate <em>x</em>: x = -4.36364
Answer:
y = -16
Step-by-step explanation:
x - 3 = -19
-19 + 3 = -16
line symmetry is a perfect reflection of a shape when cut in half. imagine a line down the shape. its the square, the triangle and the trapizoid.
Answer:
Lengths of the sides in the given order
15 inches
15 inches
30 inches
Step-by-step explanation:
The total of the sides,
(2x + 5) + (2x + 5) + (5x + 5)...then add the variables with x together and those without x together.
; 9x + 15
Hence if the perimetre of the triangle is 60 in
then...; 9x + 15 = 60
; 9x = 45
;Hence the variable.., x = 5
Lengths of the sides,
Substitute the value of x into the given lengths of the sides,
2(5) + 5 = 15 inches
2(5) + 5 = 15 inches
5(5) + 5 = 30 inches
