A.24+x=80÷2 | B.24+2x=80 | C.80-2x=24×2 | D.2(24+x)=80 |
A.x+3x=380 | B.x+(3x+20)=380 | C.x+20=380 | D.3x+20=380 |
A.1.5+x=5.5 | B.5.5-5x=1.5 | C.5x+1.5=5.5 |
A.9 | B.4.5 | C.45 |
A.2x-12=68 | B.2x+12=68 | C.68-2x=12 |
A.3 | B.4 | C.5 |
A.2x-4=32 | B.2(x-4)=32 | C.2x+4=32 |
A. | B. |
C. | D. |
A.200 | B.280 | C.480 |
A.2+4=14 | B.2-4=14 | C.14+2=4 |