\(28x+\left(1+2+3+...+28\right)=555\)
\(28x+406=555\)
\(28x=555-406\)
\(28x=149\)
\(x=\frac{149}{28}\)
(x+1)+(x+2)+(x+3)+(x+4)+...+(x+28)=555
x+1+x+2+x+3+x+4+...+x+28=555
(x+x+x+x+...+x)+(1+2+3+4+...+28)=555
\(x\) x 28+406=555
\(x\)x28=555-406
\(x\)x28=149
x=149:28
x=\(\frac{149}{28}\)
(x+1)+(x+2)+(x+3)+(x+4)+...+(x+28)=555
x+1+x+2+x+3+x+4+...+x+28=555
(x+x+x+...+x)+(1+2+3+4+..+28)=555
28.x+(28.29:2)=555
28.x+406=555
28.x=555-406
28.x=149
x=149/28
(x+1)+(x+2)+(x+3)+(x+4)+...+(x+28)=555
x+1+x+2+x+3+x+4+...+x+28=555
(x+x+x+...+x)+(1+2+3+4+..+28)=555
28.x+(28.29:2)=555
28.x+406=555
28.x=555-406
28.x=149
x=149/28
(x+1)+(x+2)+(x+3)+(x+4)+...+(x+28)=555
x+1+x+2+x+3+x+4+...+x+28=555
(x+x+x+...+x)+(1+2+3+4+..+28)=555
28.x+(28.29:2)=555
28.x+406=555
28.x=555-406
28.x=149
x=149/28
(x+1)+(x+2)+(x+3)+(x+4)+...+(x+28)=555
x+1+x+2+x+3+x+4+...+x+28=555
(x+x+x+...+x)+(1+2+3+4+..+28)=555
28.x+(28.29:2)=555
28.x+406=555
28.x=555-406
28.x=149
x=149/28
28x+(1+2+3+4;...28) =555
28x+ =555-406
28x =149
x =149/28