- in the second line bc. the second equation we need multiplie just by 3 and ot by 5 - so there above was multiplied by 5 and so than 5*(-5y) not equal -15y so this is equal -25y
To find the area of a triangle you multiply the base times the height, in this case the is (19m) and the height is (11m), after you multipy those numbers you divide by (2)