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barnhill6534
18.12.2020 •
Mathematics
-3x + 40 = -23
A) -21
B)5.6
C)21
D)-32.3
Solved
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Ответ:
C) 21
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
to RightEquality Properties
Step-by-step explanation:
Step 1: Define
-3x + 40 = -23
Step 2: Solve for x
Isolate x term: -3x = -63Isolate x: x = 21Step 3: Check
Plug in x into the original equation to verify it's a solution.
Substitute in x: -3(21) + 40 = -23Multiply: -63 + 40 = -23Add: -23 = -23Here we see that -23 does indeed equal -23.
∴ x = 21 is the solution to the equation.
Ответ:
(2)the subscribers to a golf magazine
(3)the people at the computer store at the mall
this are the answers I hope it helps