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3 years ago

3. Five less than twice a number is 7.

Mathematics

2 answers:

Ainat [17]3 years ago

8 0

Answer: 2a -5 = 7 and a = 6

Step-by-step explanation:

If 5 is less than twice a, the the expression will be 2a -5, since 2 a is the same as 2 times a, and 5 less than 2a is the same as subtracting 5 from 2a. "is" is the same as equal to, so the whole expression has to equal 7.

2a - 5 = 7 You can solve for a by adding 5 to both sides.

+5 +5

2a = 12 Now divide both sides by 2.

a = 6.

Vera_Pavlovna [14]3 years ago

7 0

Answer:

2x-5=7 As an expression

x=6

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