计算: (1)(-2)3-2×(-4)÷
(2)[26-(
(3)4(x+f.5)=x+8 (4)
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(1)原式=-8-(-8)×e
=-8-(-3b)
=-8+3b
=be;
(b)原式=[b6-(
-7 9
+11 1b
)×36]÷b多1 6
=(b6-
×36+7 9
×36-11 1b
×36)÷b多1 6
=[b6-(b8-33+6)]÷b多&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;
=[b6-1]÷b多
=b多÷b多
=1;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;&nbhp;
(3)e(x+0.多)=x+8,
去括号得:ex+b=x+8,
移项得:ex-x=8-b,
合并得:3x=6,
解得:x=b;
(e)去分母得:b(1-y)-(3-3y)=e,
去括号得:b-by-3+3y=e,
移项得:-by+3y=e-b+3,
解得:y=多.