17. 3(4-2(-2))......3(2(-2)).....3(-4).....-12
18. 2(-3)-3(3)......-6--9......-6+9.....3
19. 1,234.6
Answer:
Step-by-step explanation:
7x+4y=10
y=x-14
replace y,
7x+4(x-14)=10
7x+4x-4*14=10
11x-56=10
11x=56+10
11x=66
x=66/11
x=6
Answer:
(a) 0 (b) 1^2
Step-by-step explanation:
photo number 1 is answer for question 2(a)
photo number 2 is answer for question 2(b)