Question 10 • Grade 7 Mathematics
You can multiply both sides by −2 to cancel the coefficient −1/2, giving x + 4 = −12. You can also distribute −1/2 across the parentheses, giving −1/2x − 2 = 6. Both are valid first steps that simplify the equation; distributing −2 is not valid because −2 is not the factor shown.
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