Question

70 - 5.(x - 3)= 45

10 + 2 .x = 4⁵ : 4³

ghi lời giải va kết quả đầy đủ

Answer 1

70 - 5.(x-3) = 45

5.(x-3) = 25

x-3 = 5

x=8

b) 10 + 2x = 4⁵ : 4³ = 4² = 16

2x = 6

x = 3

Answer 2

\(70-5\left(x-3\right)=45\)

\(\Rightarrow5\left(x-3\right)=70-45=15\)

\(\Rightarrow x-3=15:5=3\)

\(\Rightarrow x=3+3=6\)

\(10+2x=4^5:4^3\)

\(\Rightarrow10+2x=4^2=16\)

\(\Rightarrow2x=16-10=6\)

\(\Rightarrow x=6:2=3\)