Answers:
PROBLEM 1:
2(13t - 15) + 3(t - 19) = 0
** expand using the distributive property **
(2)(13t) + (2)(-15) + (3)(t) + 3 (-19) = 0
** do the multiplication **
26t - 30 + 3t + -57 = 0
combine like terms... to get...
29t -87 = 0
29t = 87
** divide both sides by "29" **
t = 87/29
Hope this helps!
29t - 87
1.2*13t - 1.2*15 + 3t - 3*19 =0
18.6t -72=0
t=72/18.6
t=3.87
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