Question

a) (-8)+14+16+30

b) 145-(-35)+(-20)

c) 2+(-4)+3(-7)

d) -(-26)+134-18

Answer 1

a: =-8+60=52

b: =145+35-20

=180-20=160

d:=26+134-18

=160-18

=142

Answer 2

a)

\((-8)+14+16+30 \)

\(=6+16+30\)

\(=22+30\)

\(=52\)

b)

\( 145-(-35)+(-20) \)

\(=189+(-20)\)

\(=169\)

c)

\( 2+(-4)+3(-7) \)

=> cái 3 x hay - hay : hay + vậy

d)

\( -(-26)+134-18\)

\(=160-18\)

\(=142\)

Answer 3

\(a,\left(-8\right)+14+16+30=\left(14+16\right)+\left(-8+30\right)=20+22=42\)
\(b,145-\left(-35\right)+\left(-20\right)=\left(145+35\right)-20=180-20=160\)
\(c,2+\left(-4\right)+3\left(-7\right)=-2+\left(-21\right)=-23\)
\(d,-\left(-26\right)+134-18=\left(26+134\right)-18=160-18=142\)

Answer 4

a) (-8)+14+16+30
= 6 + 16 + 30
= 22 + 30
= 52
b) 145-(-35)+(-20)
= 145 + 35 + -20
= (180-20)

= 160 

c) 2+ (-4) + 3 nhân - 7 hả c
d)(-26) + 134 - 18 

=26+134-18

=160-18

=142