Question 11 • Mathematics 8
Distribute and combine like terms: 3(⅓x + 1) + 4 = x + 7, and −1 − 4(x + 3) = −4x − 13. This gives x + 7 = −4x − 13, so moving the variable terms together and the constants to the other side gives 5x = −20. If the terms are moved in the opposite direction, the equivalent equation is −5x = 20; therefore, the possible constants are −20 or 20.
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