Answer only one question No 1 only
1 answer:
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Collect the like terms
9x-5x=20
4x=20 divide both sided by 4
x=5
Answer:
Step-by-step explanation:
A letter or symbol is used to represent an unknown quantity
Answer:
$270
Step-by-step explanation:
Right angle i think
90 degree angle is right angle so jus Measure it
