Respuesta :
Answer:
44
Step-by-step explanation
12 = r - (34-2)
Do parenthesis first
12=r-(32)
add 32 to both sides
44=r
The value of r = 44.
What is algebraic expression?
In mathematics, an expression that incorporates variables, constants, and algebraic operations is known as an algebraic expression (addition, subtraction, etc.). Terms comprise expressions.
GIVEN
Simplifying
12 = r + -1(34 + -2)
Combine like terms: 34 + -2 = 32
12 = r + -1(32)
Multiply -1 * 32
12 = r + -32
Reorder the terms:
12 = -32 + r
Solving
12 = -32 + r
Solving for variable 'r'.
move all terms containing r to the left, all other terms to the right.
Add '-1r' to each side of the equation.
12 + -1r = -32 + r + -1r
Combine like terms: r + -1r = 0
12 + -1r = -32 + 0
12 + -1r = -32
Add '-12' to each side of the equation.
12 + -12 + -1r = -32 + -12
Combine like terms: 12 + -12 = 0
0 + -1r = -32 + -12
-1r = -32 + -12
Combine like terms: -32 + -12 = -44
-1r = -44
Divide each side by '-1'.
r = 44
Simplifying
r = 44
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