6×7-30=
(23+12)÷5=
(28-14)÷7=
(42-20)÷2=
72÷9+24=
(38-12)÷2=
7×4+25 54÷(43-37) 63÷9+34
(77-69)×7 18-6÷3 (32+16)÷8