Question

{54,2×3,5-2,5×[4-0,1×(x+2÷5)]}÷0,8=235,4 cum se rezolva va rog frumos ​

Answer 1

Răspuns:x=2.3494

Explicație pas cu pas:{54,2×3,5-2,5×[4-0,1×(x+2÷5)]=235,4

{54,2×3,5-2,5×[4-0,1×(x+2÷5)]}÷0,8=235,4/x0.8

{54,2×3,5-2,5×[4-0,1×(x+2÷5)]}=235,4x0.8

{54,2×3,5-2,5×[4-0,1×(x+2÷5)]}=188.32

189.7 - 2.5x(4- 0.1x -4)=188.32

189.7 -2.5x(-0.1x)=188.32

189.7 + 0.25x^2=188.32/-189.7

0.25x^2=-1.38

0.5x=1.17473/%0.5

x=2.3494