Solve for x: 9x + 13 = -59.
Answer and explanation
Correct answer: A. -8
- Step 1: Subtract 13 from both sides: 9x = -72.
- Step 2: Divide by 9: x = -8.
Answer
-8.
Why not the others: -7: the constant was moved with the wrong sign. -72: the equation was not divided by the coefficient. 8: the sign of the solution was reversed.
Practise more Algebra and equations.
Free questions with an explanation for every one, and full timed Tahsili SAAT (Saudi Arabia) mock tests.