Question

[ylinh2003]

giải giúp mình vs

\(a)(x+3)/11=1/2\)

\(b)(2x+11)/11=18\)

\(c)(3x+52)/15=21/4\)

\(d)(3x+1)/15=(2x-3)/4\)

\(e)(2x+11)/44=(x+11)/10\)

\(f)(11x-32)/4=17x+55-9x\)

\(m)(12x+11)/13=8x/7\)

(mấy dấu này (/) là thay cho gạch phân số )

mong m.n giup đỡ

Answer 1

[Nguyễn Như Nam]

a) \(\frac{x+3}{11}=\frac{1}{2}\Rightarrow x+3=5,5\Rightarrow x=2,5\)

b)\(\frac{2x+11}{11}=18\Rightarrow2x+11=18.11=198\Rightarrow x=\frac{198-11}{2}=93,5\)

c) \(\frac{3x+52}{15}=\frac{21}{4}\Rightarrow3x+52=\frac{21}{4}.15=78,75\Rightarrow x=\frac{78,75-52}{3}=\frac{107}{12}\)

d) \(\frac{3x+1}{15}=\frac{2x-3}{4}\Rightarrow12x+4=30x-45\Rightarrow49=18x\Rightarrow x=\frac{49}{18}\)

e)\(\frac{2x+11}{44}=\frac{x+11}{10}\Rightarrow20x+110=44x+484\Rightarrow0=24x+374\Rightarrow x=\frac{-187}{12}\)

f)\(\frac{11x-32}{4}=17x+55-9x=8x+55\Rightarrow11x-32=32x+220\Rightarrow0=21x+252\Rightarrow x=-12\)

m) \(\frac{12x+11}{13}=\frac{8x}{7}\Rightarrow84x+77=104x\Rightarrow77=20x\Rightarrow x=\frac{77}{20}\)

Answer 2

[Kẹo dẻo]

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