Question

qual e a operação de 2x+1+5 (x-3)=30

Answer 1

2x+1+5 (x-3)=30
2x+1+5x-15=30
2x+5x=-1+15+30
7x=45-1
7x=44
x=44/7

Answer 2

$2x + 1 + 5x - 15 = 30 \\ 2x + 5x = 30 - 1 + 15 \\ 7x = 44 \\ x = \frac{44}{7} \\ x = 6.28$