Question

aflati x din 2x+3/4×15/2=30​

Answer 1

Răspuns:

x = $\frac{117}{15}$ = 7,8

Explicație pas cu pas:

2x+$\frac{3}{4}$×$\frac{15}{2}$=30​

2x×$\frac{15}{2}$=$\frac{30}{1}$-$\frac{3}{4}$​=$\frac{120}{4}$​-$\frac{3}{4}$​ = $\frac{117}{4}$

2x = $\frac{117}{4}$ : $\frac{15}{2}$ = $\frac{117}{4}$ x $\frac{2}{15}$ = $\frac{117}{2}$ x $\frac{1}{15}$ = $\frac{117}{30}$

x =  $\frac{117}{30}$ : $\frac{2}{1}$ = $\frac{117}{15}$ : $\frac{1}{1}$ = $\frac{117}{15}$ x $\frac{1}{1}$ = $\frac{117}{15}$ = 7,8