1.Write an addition expression using decimals that equals -0.5

2. Solve the following expressions.(Show your steps for subtraction
A. - 3.1+(-0.35)
B. - 7.34-(-5.51)
C.20.25+(-5.51)

1) (-7.8) + 7.3 = -0.05

A) -3.45

B) -1.83

C) 14.74

Step-by-step explanation:

hope that helped :)

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1