Simplify each expression. Justify each step. 1. (12 + 8x) + 13

2. (7-7) + 12

3. (5 x m) x 7

1.(12 + 8x)+13

= (12+ 8x) +13=0

=12+8x= -13

=8x = -13 -12

= 8x = -25

x=-25/8

x=−3.125

2.(7-7)+12

0+12

=12

3.(5*m) *7

= 35m

I hope this helps.

step-by-step explanation:

10.50 + taxes which added up to 11.50

answer rather than having to add and subtract the measurements of the semi-circle, notice that the semicircle to the left of ad is actually identical in area to the blank semicircle-shaped space to the left of bc. so if we transferred the red semicircle into the blank space, we would end up with a square of side length 24 cm. the area of a square is s^2 = 24^2 = 676 cm^2.

u also answered this so i think u would know but i am here to

put in or use mine