leahstubbs
18.03.2020 •
Mathematics
Solve the equation, if possible.
1. 2x + 2(4x - 2) + 3x = x + 3(x – 8) + 4x
Solved
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Ответ:
x=-4
Step-by-step explanation:
Distribute and expand everything in brackets.
2x+2*4x+2*-2+3x=x+3*x+3*-8+4x
2x+8x-4+3x=x+3x-24+4x
Solve like terms
13x-4=8x-24
Place like terms on same side.
13x-8x=-24+4
Solve for x
5x=-20
x=-4
Ответ:
Thus 5t is the amount of cars.
t + 5t = 30
6t = 30
t = 30/6
t = 5
Therefore, there are 5 trucks