4- Making Inferences in the second excerpt, Thomas Roebuck mentions "grinders' complaint" as a health problem common to those in his occupation. What type of illness do you think this
might have been? How do you know? What could have been some of the contributing
occupational factors in this illness?|

answer; i believe its (cpr);

cjokvxdtjvv

8 - (2a + 7) = a + 40     distribute/multiply - into (2a + 7)

8 - 2a - 7 = a + 40

1 - 2a = a + 40       add 2a on both sides

1 = 3a + 40         subtract 40 on both sides

-39 = 3a       divide 3 on both sides

-13 = a

[proof]

8 - (2a + 7) = a + 40

8 - (2(-13) + 7) = -13 + 40

8 - (-26 + 7) = 27

8 - (-19) = 27

8 + 19 = 27

27 = 27

which statement explains one of the reasons world war 1 was so much more destructive than earlier conflicts