-3x -4=2
add four to both sides
-3x=6
divide by (-)3 on both sides
x= -2
to check:
-2(-3) -4=2
6-4=2
It checks.
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Just multiply across: 3x4=12 12x7=84 84x2=168
Because 3 x 4 = 12
-7.5?
8x8 = 64 so it is 64 (the y) 3x4 = 12 so it is 12 (the x) 64+12 is 76.
3x4 plus 5x3 plus x2 - 5 divided by x 2 =[(3x4) + (5x3) + (x2 - 5)]/x2 =(12 + 15 + x2 -5)/x2 =(27 - 5 + x2)/x2 =(22 + x2)/x2