<=> 20 + 8x + 24 = 208
<=> 8x = 208 - 20 - 24 = 164
<=> x = 164 : 8 = 41/2 = 20,5
\(20+8x+24=208\)
\(8x+44=208\)
\(8x=208-44=164\)
=> \(x=\dfrac{164}{8}=20,5\)
` 20 + 8 . ( x + 3) = 52 . 4`
` 20 + 8 . ( x + 3) = 208`
` 8. ( x + 3) = 208 - 20`
` 8 . ( x + 3) = 188`
` x + 3 = 188 : 8`
` x + 3 = 23,5`
` x = 23,5 - 3`
` x = 20,5`
`20+8xx(x+3)=52xx4`
`20+8xx(x+3)=208`
`8xx(x+3)=208-20`
`8xx(x+3)=188`
`x+3=188:8`
`x+3=23,5`
`x=23,5-3`
x=20,5`