How many 0.4 liter glasses of water does it take to fill up a 3.4 liter pitcher

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.