Answer:
- 4 + 3x = 19; x = 5
- 2x + 7 = 9; x = 1
- x/3 - 10 = 6; x = 48
- 5(4 + x) = -15; x = -7
Step-by-step explanation:
For #1:
[tex]4 + 3x = 19\\3x = 15\\x = 5[/tex]
For #2:
[tex]2x + 7 = 9\\2x = 2\\x = 1[/tex]
For #3:
[tex]\frac{x}{3} - 10 = 6\\ \\\frac{x}{3} = 16\\\\x = 48[/tex]
For #4:
[tex]5(4 + x) = -15\\20 + 5x = -15\\5x = -35\\x = -7[/tex]
