Answer:
1.) x = 4 2.) x = - 6
Explanation:
1. 5x + 3 = 23
Isolate the variable. Subtract 3 from both sides.
5x = 20
Divide both sides by 5.
x = 4
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2. 42 = 18 - 4x
Isolate the variable. Subtract 18 from both sides.
24 = - 4x
Divide both sides by -4.
x = - 6