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Mathematics
Milo Vaughan
6 June, 23:24
What is 22 + 5d = - 8 (7d-4)
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Lorelei Roach
7 June, 02:13
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22+5d=-8x7d=56d + - 8x-4=32
22+5d=-56d+32
22+32=54 and - 56d+5d=-51d
The answer would be 51d+54
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Rodolfo Perkins
7 June, 03:19
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Remark
The steps are the same usually. Remove the brackets and collect like terms on each side of the equal sign.
Solution
22+5d = - 8 (7d - 4) Remove the brackets.
22+5d = - 56d + 32 Notice the sign change on 32. 2 minus quantities = a plus when multiplied. Add 56d to both sides.
22 + 5d + 56d = - 56d + 56d + 32
22 + 61d = 32 Subtract 22 from both sides.
61d = 32 - 22
61d = 10 Divide by 51
d = 10/61
d = 0.1639 Answer
Check
LHS
22 + 5*0.1639 = 22.8197
RHS
-8 (7*0.1639 - 4)
-8 (1.1473 - 4)
-8 (-2.8527)
22.8216
The difference is a rounding error.
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