①4.2+x=12.7 ②2x﹣0.46=2.74 ③4(x+8)=40
x=
+ = 2- = + = - =
-2= + = - = 1- =
①4x÷1.2=0.5
②2.7x-0.8x=5.7
③1.3x-4×0.8=3.3
④5x-1.3=0.2
⑤4x+6x=26
⑥24+0.4x=100
3.6