9 - 4x = 57
9 - 9 - 4x = 57 - 9
-4x = 48
-4x/-4 = 48/-4
x = -12
Always double check your answer.
9 - 4x = 57
9 - 4(-12) = 57
9 + 48 = 57
57 = 57
So 9 - 4x = 57 when x = -12
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57x1=57
To evaluate the algebraic expression 7 + 5x for x = 10, you substitute the value of x into the expression. So, you get 7 + 5(10), which simplifies to 7 + 50. Therefore, the final answer is 57.
38 +what=57
171/57 = 3
57 + z = 97 z = 97 - 57 z = 40