3(2x - 1) + 2(x + 5) = 47
6x - 3 + 2x + 10 = 47
6x + 2x = 47 + 3 - 10
8x = 40 / : 8
x = 5 ← the end
Answer:
x = 5
Step-by-step explanation:
[tex]3(2x - 1) + 2(x + 5) = 47[/tex]
[tex]6x - 3 + 2(x + 5) = 47[/tex]
[tex]6x - 3 + 2x + 10 = 47[/tex]
[tex]8x - 3 + 10 = 47[/tex]
[tex]8x + 7 = 47[/tex]
[tex]8x = 47 - 7[/tex]
[tex]8x = 40[/tex]
[tex](8x \div 8 = 40 \div 8 = x = 40 \div 8 )[/tex]
[tex]x = 5[/tex]