Question

a) 23+x=150

b) 300 : x - 18 =42.

c) 7^x+3 = 7²³.7⁸.

Answer 1

\(a,\Rightarrow x=150-23=127\\ b,\Rightarrow300:x=42+18=60\\ \Rightarrow x=300:60=5\\ c,\Rightarrow7^{x+3}=7^{23+8}=7^{31}\\ \Rightarrow x+3=31\Rightarrow x=28 \)

Answer 2

a) \(\Rightarrow x=150-23\)

\(\Rightarrow x=127\)

b) \(\Rightarrow300:x=60\)

\(\Rightarrow x=5\)

c) \(\Rightarrow7^{x+3}=7^{31}\)

\(\Rightarrow x+3=31\Rightarrow x=28\)

Answer 3

a.x=127

b x=5

c x=7^28