Question

1)Calcule

A)8×(5a +4)+ 6a=

B)7c -4 -3c +2c +20=

C)30b +5c + 7b -15c=

D)8a + 3c +8c - 4a +13=

Answer 1

a) 8*(5a+4)+6a=0
40a+32+6a=0
40a+6a=-32
46a=-32
a=-32/46

b)7c-4-3c+2c+20=0
7c-3c+2c=-20+4
6c=-16
c=-16/6