Question

7(5x + 7) = 399 can someone tell me what is x with steps please and thank you

Answer 1

Answer:

x = 10

Step-by-step explanation:

$7(5x+7)=399\\\\35x+49=399\\\\35x+49-49=399-49\\\\35x=350\\\\\frac{35x=350}{35}\\\\ \boxed{x=10}$

Hope this helps.