Question

A) 4(2x-3)=8(2x+5


B) (4x-5)=5(2x-5)


C)8(6x+2)=5(x-2)




D) 2)3x-4)=7(11-2×)


E)7(5-x)=4(x-11)​

Answer 1

Resposta:

A) x = 6,5

B) x = 3,33333333333

C) x = $\frac{-26}{43}$

D) x = 4,25

E) x = 7,18181818182

Explicação passo a passo:

$A)\\4(2x-3)=8(2x+5)\\\\8x-12=16x+40\\\\8x-16x=40+12\\\\-8x=52\\\\x=\frac{52}{-8} \\\\x=6,5\\\\\\\\B)\\(4x-5)=5(2x-5)\\\\4x-5=10x-25\\\\4x-10x=-25+5\\\\-6x=-20\\\\x=\frac{-20}{-6} \\\\x=3,33333333333\\\\\\\\C)\\8(6x+2)=5(x-2)\\\\48x+16=5x-10\\\\48x-5x=-10-16\\\\43x=-26\\\\x=\frac{-26}{43} \\\\x=-0.60465116279$

$D)\\2(3x-4)=7(11-2x)\\\\6x-8=77-14x\\\\6x+14x=77+8\\\\20x=85\\\\x=\frac{85}{20} \\\\x=4,25\\\\\\E)\\7(5-x)=4(x-11)\\\\35-7x=4x-44\\\\-7x-4x=-44-35\\\\-11x=-79\\\\x=\frac{-79}{-11} \\\\x=7,18181818182$

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