Maerus22
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Sofia has been saving money to buy a new computer. For her birthday, Sofia’s mother gave her twice what she had already saved. Now she has $135. a. Using x to represent the money Sofia saved before her mother’s present, write an equation that represents the situation. b. How much money did Sofia have before her birthday?

Respuesta :

x=money saved before her mother´s present.
2x=money gave by Sofia´s mother.
We can suggest this equation:
x+2x=135
3x=135
x=135/3
x=45

Answer: the equation would be: x+2x=135; and Sofia had $45 before her birthday.

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