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Zachary Massey
8 February, 17:40
Whats the answer to - 2 (x+7) = 28
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Malia Winters
8 February, 18:37
0
x = - 21
Step-by-step explanation:
-2 (x+7) = 28
simplify the bracket with - 2
-2 * x + - 2 * 7 = 28
-2x - 14 = 28
combine the like terms
-2x = 28 + 14
whenever a negative or positive crosses an equal sign, the negative changes to positive or if it is positive, the sign changes from positive to negative.
-2x = 42
divide by - 2
x = 42
-2
x = - 21
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Maverick Morrow
8 February, 18:54
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x = - 21
Step-by-step explanation:
Start by dividing by - 2. Then you don't have bracket problems.
-2 (x + 7) = 28
-2/-2 (x + 7) = 28 / - 2 Do the division
x + 7 = - 14 Subtract 7 from both sides
x + 7 - 7 = - 14 - 7 The 7's on the left Cancel. Think money for - 14-7
x = - 21
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