Como puedo resolver esta ecuación (3x-10)+5(x-1)=4x+10

25/4

Step-by-step explanation:

(3x-10)+5(x-1)=4x+10

Open brackets

3x-10+5x-5=4x+10

Collect like terms

3x+5x-4x=10+5+10

4x=25

Divide both sides by 4

4x ➗ 4=25 ➗ 4

x=25/4

answer: 230 miles ( vote ! )

step-by-step explanation:

180.39 minus 17.99 equals 162.4

then divide 162.4 by .80 to get 230

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!