Question

tim, biet

a. x + 5 = 3

b. 12x - 64 = 2 mu 5

Answer 1

a, \(x+5=3\)

\(\Leftrightarrow x=3-5\)

\(\Leftrightarrow x=-2\)

Vậy ....

b, \(12x-64=2^5\)

\(\Leftrightarrow12x-64=32\)

\(\Leftrightarrow12x=32+64\)

\(\Leftrightarrow12x=96\)

\(\Leftrightarrow x=96:12\)

\(\Leftrightarrow x=8\)

Vậy ..

Answer 2

a,\(x+5=3\)

\(x=-2\)

b,\(12x-64=2^5\)

\(12x-64=32\)

\(12x=96\)

\(x=8\)

Answer 3

A,x+5=3

x=3-5

x=-2

B,12x-64=2⁵

^12x-64=32

^12x=32+64

^12x=96

^x=96:12

^x=8