a) -8x + 2x + 3x = -12-8x + 2x + 3x = -12-3x = -12x = -12 / -3x = 4
b) −7x+1-7x + 1−7x+1 - 2−8x2 - 8x2−8x = 0-7x + 1 - 2 + 8x = 0x - 1 = 0x = 1
c) 4y−1y-1y−1 - 0.8y−5y-5y−5 = 324y - 4 - 0.8y + 4 = 323.2y = 32y = 32 / 3.2y = 10
a) -8x + 2x + 3x = -12
-8x + 2x + 3x = -12
-3x = -12
x = -12 / -3
x = 4
b) −7x+1-7x + 1−7x+1 - 2−8x2 - 8x2−8x = 0
-7x + 1 - 2 + 8x = 0
x - 1 = 0
x = 1
c) 4y−1y-1y−1 - 0.8y−5y-5y−5 = 32
4y - 4 - 0.8y + 4 = 32
3.2y = 32
y = 32 / 3.2
y = 10