Question

b)7+3x=3 
c)6y +2 = 20
d) 4y = 10
e) 5x - 7=13
f) 4 phần 3 . x + 7 phần 2 = 10
g) 4 - 2 phần 3y = 2 
h) 6x= 36
j)  7x - 3=0
giúp em với ạ em cảm ơn anh chị nhiều ạ

Answer 1

\(b,7+3x=3\)

\(\Leftrightarrow3x=-4\)

\(\Leftrightarrow x=-\dfrac{4}{3}\)

\(c,6y+2=20\)

\(\Leftrightarrow6y=18\)

\(\Leftrightarrow y=3\)

\(d,4y=10\)

\(\Leftrightarrow y=\dfrac{10}{4}\)

\(\Leftrightarrow y=\dfrac{5}{2}\)

\(e,5x-7=13\)

\(\Leftrightarrow5x=20\)

\(\Leftrightarrow x=4\)

\(f,\dfrac{4}{3}x+\dfrac{7}{2}=10\)

\(\Leftrightarrow\dfrac{4}{3}x=\dfrac{13}{2}\)

\(\Leftrightarrow x=\dfrac{39}{8}\)

\(g,4-\dfrac{2}{3}y=2\)

\(\Leftrightarrow\dfrac{2}{3}y=2\)

\(\Leftrightarrow y=3\)

\(h,6x=36\Leftrightarrow x=6\)

\(j,7x-3=0\)

\(\Leftrightarrow7x=3\)

\(\Leftrightarrow x=\dfrac{3}{7}\)