3 years ago

Can you please help me -2.5x + 6 + 30x - 4.5

Mathematics

2 answers:

VARVARA [1.3K]3 years ago

7 0

The answer is: 27.5x+1.5

igomit [66]3 years ago

6 0

It is 27.5x+1.5 :) ;;;; I

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/5×+4/ =/×+9/ solve for x

Bumek [7]

Answer:

$\large\boxed{x=\dfrac{5}{4}\ \vee\ x=-\dfrac{13}{6}}$

Step-by-step explanation:

$|5x+4|=|x+9|\iff5x+4=x+9\ or\ 5x+4=-(x+9)\\\\5x+4=x+9\qquad\text{subtract 4 from both sides}\\5x=x+5\qquad\text{subtract x from both sides}\\4x=5\qquad\text{divide both sides by 4}\\x=\dfrac{5}{4}\\\\5x+4=-(x+9)\\5x+4=-x-9\qquad\text{subtract 4 from both sides}\\5x=-x-13\qquad\text{add x to both sides}\\6x=-13\qquad\text{divide both sides by 6}\\x=-\dfrac{13}{6}$