26−6+9+7−12= 26-6+9+7-12= 26−6+9+7−12=
Due to the fact that the exercise only involves addition and subtraction operations, we will solve it from left to right:
26−6=20 26-6=20 26−6=20
20+9=29 20+9=29 20+9=29
29+7=36 29+7=36 29+7=36
36−12=24 36-12=24 36−12=24
24 24 24