$\dfrac{108×100+94×200}{74×76+252×38}$
$=\dfrac{108×100+94×2×100}{74×2×38+252×38}$
$=\dfrac{108×100+188×100}{148×38+252×38}$
$=\dfrac{100×(108+188)}{38×(148+252)}$
$=\dfrac{100×296}{38×400}$
$=\dfrac{296}{38×4}$
$=\dfrac{296}{152}$
$=\dfrac{37}{19}$
$\tiny$
$\dfrac{36×48+18×104}{12×24+36×42}$
$=\dfrac{18×2×48+18×104}{12×24+12×3×42}$
$=\dfrac{18×96+18×104}{12×24+12×126}$
$=\dfrac{18×(96+104)}{12×(24+126)}$
$=\dfrac{18×200}{12×150}$
$=\dfrac{3×4}{2×3}$
$=\dfrac{4}{2}$
$=2$
Đáp án:
Giải thích các bước giải:
help..............................
giúp...............................................
1 Everything is ready for our meal. All the dishes (just/ cook )_____by my mother 2 It was not until 1980 that he (begin)______ to learn english 3 " I dont know how to use this fax machine"- "It's quite easy. I (show)_____you" 4 she phoned( invite)_______ me to the party 5 Everything is ready for your lesson. The board ( clean) _______ and all the students are waiting for you 6 It was not until he was 30 that he(know)_______ how to swim 7 "What would you like to eat?"- " I (have)_____ a sandwich, please " 8 My father didn't have time (read)______ the newspaper
vì sao chữ quốc ngữ tùy dễ học những không có điều kiện phổ biến trong thời kỳ này
In about 140 words, write a paragraph about your favorite subject in your high school.
N vẽ mik mấy em chibi nèo Nữ nhé vì mik là nữ
Phân tích thành nhân tử: ($x^{2}$ + $x$)($x^{2}$ + $x$ + $1$) - $2$
How to reduce air pollution - using public buses or bicycles - not leaving of garbage - putting different kinds of waste in different places - keeping personal hygiene and public health - using solar energy instead of coal, gas and oil
Do you think it's necessary to learn English at school? Why or why not? Write an essay (120-150 words) to show your ideas
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