Question

3×8+1-{4+[15×(8-5x)+23]:4}=4

Answer 1

3×8+1-{4+[15×(8-5x)+23]÷4}=4
24+1-{4+[15×(8-5x)+23]÷4}=4
25-{4+[15×(8-5x)+23]÷4}=4
4+[15×(8-5x)+23]÷4=25-4
4+[15×(8-5x)+23]÷4=21
[15×(8-5x)+23]÷4=21-4
[15×(8-5x)+23]÷4=17
15×(8-5x)+23=17×4
15×(8-5x)+23=68
15×(8-5x)=68-23
15×(8-5x)=45
8-5x=45÷15
8-5x=3
5x=8-3
5x=5
x=5÷5
x=1

verificare:
3×8+1-{4+[15×(8-5×1)+23]÷4}=4
24+1-{4+[15×(8-5)+23]÷4}=4
24+1-[4+(15×3+23)÷4]=4
24+1-[4+(45+23)÷4]=4
24+1-(4+68÷4)=4
24+1-(4+17)=4
24+1-21=4
25-21=4

Sper că te-am ajutat.