bigmouth804
25.08.2019 •
Mathematics
Four times bruce's age plus two times sarah's age equals 84. bruce's age is also three times sarah's age. how old is bruce?
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Ответ:
sarah=y
4x+2y=84
x=3y
subsitute
4(3y)+2y=84
12y+2y=84
14y=84
divide both sides by 14
y=6
sarah=6
x=3(y)
x=3(6)
x=18
bruce=18
sarah=6
Ответ:
my favorite color would definitely be blue
Step-by-step explanation: