Write an equation and solve for the unknown number.
Twice a number, increased by 3 is 7.
(1 point)
Responses
The number is 2.
The number is 2.
The number is 8.
The number is 8.
The number is 20.
The number is 20.
The number is 5.
Let x be the unknown number. The equation is:
2x + 3 = 7
Subtract 3 from both sides of the equation:
2x = 4
Divide both sides of the equation by 2:
x = 2
Therefore, the unknown number is 2.