No, it would only work with similar terms. However, you would be able to multiply them, like 2x times 2y = 4xy.
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2+(1/2) +34- (1/10)
2.5 + 34 - .1
36.5-.1
36.4
It would just be

Let me know if you want an explanation
Answer:
the answer is 9
Step-by-step explanation:
why it 9 Add '2.7' to each side of the equation.
-2.7 + 2.7 + 0.3x = 9 + 2.7
Combine like terms: -2.7 + 2.7 = 0.0
0.0 + 0.3x = 9 + 2.7
0.3x = 9 + 2.7
Combine like terms: 9 + 2.7 = 11.7
0.3x = 11.7
Divide each side by '0.3'.
x = 39
Simplifying
x = 39