Answer:
4
Step-by-step explanation:
because y is 90 and x is 20 so z is 71
Answer:
Step-by-step explanation:
17(7x−3) =1
Divide both sides by 17
7x - 3 = 1/17
Collect like terms
7x = 1/17 + 3
x = (1/17 + 3) /7
x = 52/17 ÷ 7
x = 52/17 × 1/7
x = 52/119
Answer:
18. Commutative property of addition
19. Distributive property
20. Associative property of addition
Step-by-step explanation: