to evaluate a variable expression, you must (blank) values from the variables, and calculate the result
1 answer:
Answer:
Substitute
Step-by-step explanation:
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Answer:
20x1=20
Step-by-step explanation:
The product of 1 and any number is the number.
180-90=3x
90=3x
X=30
90+x+y=180
90+30+y=180
120+y=180
Y=60
Answer:
Step-by-step explanation: