Given: AC = CD and BC = EC Prove: AB
ED
8
Statements
AC = CD, BC = EC
AC + BC = CD + BC
AC + BC = CD + EC
Reasons
Given
AC + BC = AB; CD + EC = ED
AC + BC = AB; AC + BC = ED
AB = ED

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

30.5*10=350$

you have to multiply the number without the decimal point then add it later but if its tenn u must move the place value of the decimal point 1 to the right.