5d+3d = 15
8d = 15
d = 15/8 = 1.875
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8d = 5d+18 8d-5d = 18 3d = 18 d = 6
2(3d+7)=5+5d. 6d+14=5+5d 6d+9=5d 9=-1d d=-9 I think that's correct. If it is, ur welcome.
The expression 4e + 3d + 5e - 5d can be simplified by combining like terms. Grouping the terms with the same variable together, we have 4e + 5e + 3d - 5d. Combining the coefficients of e gives us 9e, and combining the coefficients of d gives us -2d. Therefore, the simplified expression is 9e - 2d.
5d + 19 = 79 ````-19` -19 5d = 60 `/5` /5 d=12
To simplify the expression 5d + 2(3d), you first distribute the 2 to the terms inside the parentheses, which gives you 5d + 6d. Combining like terms, you add the coefficients of the d-terms together to get 11d. Therefore, the simplified expression is 11d.