Maths-
General
Easy
Question
Solve 5x − 7 = 4x + 12. Write a reason for each step.
Hint:
using the additive property and subtraction property on both sides .solve for x.
The correct answer is: x = 19
Ans:- x = 19
Given , 5x - 7 = 4x + 12
Adding 7 on both sides by additive property of equality both sides remain equal.
5x - 7 + 7 = 4x + 12 + 7
5x = 4x +19
Subtract 4x from both sides by subtraction property of equality both sides remains equal.
5x - 4x = 4x + 19 - 4x
∴x = 19
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