For the 1 first problem you have to do additive inverse where the subtraction sign is and then combine all the z's and then combine the normal numbers and then put plus sign in between
Answer:
18
Step-by-step explanation:
10/0.5 = 20
20 * 0.9 = 18
Multiple 6 with numbers inside paranthesis:
12x - 66 + 15 = 21
add 66 fhen substrack 15 from both sides :
12x = 72 divide both sides with 12:
x = 6
Answer:
He made $50
Step-by-step explanation:
1.5 times 60 equals 90, but seeing how he spent $40 to buy the candy he only ends up with $50 in profits