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castortr0y [4]
3 years ago
13

What is 2x+3=9?????????????

Mathematics
2 answers:
ale4655 [162]3 years ago
8 0

Answer:

3

Step-by-step explanation:

Mkey [24]3 years ago
5 0

Answer:x=3

Step-by-step explanation:

Step 1: Subtract 3 from both sides.

2x+3-3=9-3

2x=6

Step 2: Divide both sides by 2.

2x/2=6/2

X=3

Hope that helps :D

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Step-by-step explanation:

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2.\\\left\{\begin{array}{ccc}y=2x+5&(1)\\y-2x=1&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\(2x+5)-2x=1\\2x+5-2x=1\qquad\text{combine like terms}\\(2x-2x)+5=1\\5=-1\qquad\text{FALSE}\\\\Answer:\ \text{No solution.}

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