Question

(x+1)+(x+2)+(x+3)+(x+4)+...+(x+28)=555

Answer 1

\(28x+\left(1+2+3+...+28\right)=555\)

\(28x+406=555\)

\(28x=555-406\)

\(28x=149\)

\(x=\frac{149}{28}\)

Answer 2

(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=\(\frac{149}{28}\)

Answer 3

(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

Answer 4

(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

Answer 5

(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

Answer 6

(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

Answer 7

28x+(1+2+3+4;...28) =555

28x+                        =555-406

28x                          =149

x                             =149/28