Math  /  Algebra

QuestionLösen Sie die folgenden Gleichungen und führen Sie jeweils die Probe durch. 1.) 3x+7=223 x+7=22 x=5x=5 2.) 7x12=307 \mathrm{x}-12=30 α=6\alpha=6 3.) 8515x=4085-15 x=40 4.) 74x=557-4 x=55

Studdy Solution
Verify the solution by substituting x=12x = -12 back into the original equation:
74(12)=7+48=55 7 - 4(-12) = 7 + 48 = 55 The left-hand side equals the right-hand side, confirming the solution is correct.
Solutions: 1.) x=5x = 5 2.) x=6x = 6 3.) x=3x = 3 4.) x=12x = -12

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