A.2x-40+40=50+40 | B.4x-80=100 | C.2x=50+40 | D.2x-30=40 |
A.4x+3.2 | B.3x=0 | C.3x﹣0.5>1 |
A. | B. | C. |
A. | B. | C. |
A.x=0.5 | B.x=5 | C.x=0.05 |
A.三年级栽的棵数+62棵=四年级栽的棵数 |
B.四年级栽的棵数-三年级栽的棵数=62棵 |
C.四年级栽的棵数+62棵=三年级栽的棵数 |
A.1 | B.2 | C.3 | D.4 |
A.22 | B.37 | C.30 |
A.4x+3.2 | B.3x-0.5<1 | C.3x+b=80 |
A.5 | B.34 | C.9.5 |