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Answer :
Step 1: Subtract 25 to both sides. This will cancel 25 on the left side and bring it over to the right
(25 - 25) - 3x = 40 - 25
(0) - 3x = 15
-3x = 15
Step 2: Isolate x by dividing -3 to both sides (the opposite of multiplication is division).
-3x ÷ (-3) = 15 ÷ (-3)
x = -5
Check:
25 - 3(-5) = 40
25 + 15 = 40
40 = 40 ....................................Correct!
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The value of x in this equation is -5.
What is an equation?
A mathematical statement consisting of an equal symbol between two algebraic expressions with the same value is known as an equation in algebra.
Equation given in the question:
25 - 3x = 40
25 - 40 = 3x
-15 = 3x
x = -5
The value of x in this equation is -5.
Learn more about equations on:
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