2^x+3-2^x=112 помогите

Question

2^x+3-2^x=112 помогите

Answer 1

2^(x+3)-2^x=112
2^x *2³-2^x=112
2^x *8-2^x=112
2^x*(8-1)=112
2^x=112:7,  2^x=16
2^x=2⁴
x=4