Toán Lớp 6: 248÷(2x-16)=62 95-3(x+3)=59 6x+75÷5=267 6+2.x=4mũ5÷4mũ3 163-3(x+8)=28 281-x=3.2mux4-2.3mux2+51÷17 5xmũ3+19=595 X+(-23)=73

Question

Toán Lớp 6:  248÷(2x-16)=62 95-3(x+3)=59 6x+75÷5=267 6+2.x=4mũ5÷4mũ3 163-3(x+8)=28 281-x=3.2mux4-2.3mux2+51÷17 5xmũ3+19=595 X+(-23)=73

daolanhoa · Answer

a,  248&divide;( 2x-16 ) = 62                  2x-16   = 248 : 62                2x-16   = 4                2x        = 4+16                2x        = 20                 x         = 20 : 2                 x         = 10  b, 95-3( x+3 ) =59          3( x+3 ) = 95-59          3( x+3 ) = 36              x+3   = 36:3              x+3   = 12              x       = 12-3              x       = 9      c, 6x+75&divide;5= 267     6x+15    = 267     6x          = 267-15     6x          = 252      x           = 252 : 6      x           = 42  d, 6+2x = 4^5:4^3     6+2x = 4^2     6+2x = 16         2x = 16-6         2x = 10           x = 10 : 2           x = 5  e, 163-3( x+8 )=28            3( x+8 )= 163-28            3( x+8 )= 135                x+8  = 135:3                x+8  = 45                x       = 45-8                x       = 37  g ,281-x = 3.2^4-2.3^2 +51 : 17     281-x = 3.16-2.9 +3     281-x = 48-18 +3     281-x = 30+3     281-x = 33            x = 281-33            x = 248   h, x+(-23)= 73     x          = 73+23     x          = 96   Xin hay nhất từ chủ tus ạ

phuongthuydung · Answer

$ 1) 2x - 16 = 248 : 62 = 4 $      $ 2x = 4 + 16 = 20  $      $ x = 20 : 2 = 10 $      $ 2) 3(x+3) = 95-59=36 $      $ x+3=36:3=12 $     $ x=12-3=9 $      $ 3)  6x+15=267 $        $ 6x=267-15=252 $        $ x=252:6=42 $        $ 4) 6+2.x=4^2=16 $       $ 2x=16-6=10 $        $ x=10:2=5 $        $ 5) 3(x+8)=163-28=135 $        $ x+8=135:3=45 $       $ x=45-8=37 $        $ 6) 281-x=3 . 2^4 - 2 . 3^2 + 51 : 17 = 3 . 16 - 2 . 9 + 3 = 48 - 18 + 3 = 33 $        $ x = 281-33=248 $        $ 7) 5 . x^3 = 595 - 19 = 576 $       $ x^3 = 576 : 5 = 576/5 $        $ x =  sqrt[3]{576/5} $        $ 8) x = 73 - ( -23 ) = 73 + 23=96 $