Respuesta :
Answer:
D, x = 9
Step-by-step explanation:
[tex]x\left(2+5\right)=63[/tex]
=> divide both side by 7
[tex]\frac{x\left(2+5\right)}{7}=\frac{63}{7}[/tex]
x=9
Answer:
D) 9
Step-by-step explanation:
Given :
⇒ 18 + 45 = x (2 + 5)
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Simplify both sides :
⇒ 18 + 45 = x (2 + 5)
⇒ 63 = 7x
⇒ 7x = 63
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Divide both sides by 7 :
⇒ 7x/7 = 63/7
⇒ x = 9