Pergunta retirada do livro da 2a. série do ensino fundamental.
2006-09-01 11:19:57 · 21 respostas · perguntado por NiceRJ 2 em Ciências e Matemática ➔ Matemática
7
2006-09-01 11:23:18 · answer #1 · answered by Deivison salvador/BA 4 · 1⤊ 2⤋
3x3x(2y)=126
18y=126
y=126/18
y=7
2006-09-04 15:14:23 · answer #2 · answered by brunna b 3 · 1⤊ 0⤋
7
2006-09-04 09:25:16 · answer #3 · answered by Anonymous · 1⤊ 0⤋
(3).(3).2x = 126
18x = 126
x = 126: 18
x = 7
{Existe x | x = 7}
2006-09-01 11:33:11 · answer #4 · answered by aeiou 7 · 1⤊ 0⤋
Um número:
___x
O dobro dele:
___2x
O triplo do dobro dele:
___3(2x) = 6x
O triplo do triplo do dobro dele:
___3(6x) = 18x
É igual a 126:
___18x = 126
___x = 126/18 = 7
~~Resposta: o número é o 7~~
2006-09-01 11:26:09 · answer #5 · answered by Illusional Self 6 · 1⤊ 0⤋
3(3(2Y)) = 126
3 X 3 X 2Y = 126
18Y = 126
Y = 126/18
Y = 7
2006-09-01 11:23:23 · answer #6 · answered by marcia_neca 2 · 2⤊ 1⤋
3(3)(2a)=126
3 x 3 x 2a=126
18a=126
a=126/18
a=7
2006-09-05 03:06:26 · answer #7 · answered by Anonymous · 0⤊ 0⤋
essa é facil,é sete.
2006-09-01 23:27:02 · answer #8 · answered by Tsung 3 · 1⤊ 1⤋
21
2006-09-01 14:42:30 · answer #9 · answered by eric 1 · 1⤊ 1⤋
3( 2x) = 126
6x =126
x =21
2006-09-01 11:31:04 · answer #10 · answered by hiper 2 · 0⤊ 1⤋
7
2006-09-01 11:30:31 · answer #11 · answered by Anonymous · 0⤊ 1⤋