Respuesta :
2.1s+2.8-1.1s=7.9 Distribute the 0.7 in the parenthesis
s+2.8=7.9 Combine like terms which in this case is 2.1s and -1.1s
s=5.1 Subtract 2.8 from both sides.
s+2.8=7.9 Combine like terms which in this case is 2.1s and -1.1s
s=5.1 Subtract 2.8 from both sides.
2.1s + 2.8 - 1.1s = 7.9
2.1s - 1.1s = 7.9 - 2.8
1s = 5.1
S = 5.1
2.1s - 1.1s = 7.9 - 2.8
1s = 5.1
S = 5.1