Question

Resolva as equações do 1° grau
A)18x-43=65
B)23x-16=14-17x
C)x+30=40
D)30-20+2x=10
E)4.(x+3)-x=24+x
F)2.(x-6)=184

Answer 1

Resposta:

Encontrar o valor de x

Explicação passo-a-passo:

$a) 18x=65+43\\\\18x=108\\\\x=\frac{108}{18} \\\\x=6\\\\b) 23x-16=14-17x\\\\23x+17x=14+16\\\\40x=30\\\\x=30/40 = \frac{3}{4}$

$c) x+30=40\\\\x=40-30\\\\x=10\\\\d) 30-20+2x=10\\\\2x=10-30+20\\\\2x=0\\\\x=0\\\\e) 4(x+3)-x=24+x\\\\4x+12-x=24+x\\\\3x-x=24-12\\\\2x=12\\\\x=\frac{12}{2} \\\\x=6\\\\f) 2(x-6)=184\\\\2x-12=184\\\\2x=184+12\\\\x=196/2\\\\x= 98$

Answer 2

Explicação passo a passo:

$A)18x - 43 = 65$

$18x = 65 + 43$

$18x = 108$

$x = 108/18$

$x = 6$

$B)23x - 16 = 14 - 17x$

$23x + 17x = 14 + 16$

$40x = 30$

$x = 30/40$

$x = 0.75$

$C)x + 30 = 40$

$x = 40 - 30$

$x = 10$

$D)30 - 20 + 2x = 10$

$2x = 10 - 30 + 20$

$2x = 0$

$x = 0/2$

$x = 0$

$E)4.(x+3)-x =24 + x$

$4x + 12 -x =24 + x$

$4x- x - x = 24 - 12$

$2x = 12$

$x = 12/2$

$x = 6$

$F) 2.(x-6) =184$

$2x - 12 = 184$

$2x = 184 + 12$

$2x = 196$

$x = 196/2$

$x = 98$