3y+5.2=2-5y 8y=-3.2 y= -0.4
3(3y + 2) + 8y 9y + 6 + 8y 17y + 6
It is like saying, "How much is 8 yams plus 2 yams plus 3 yams?" Add the numbers: 8+2+3 = 13. The answer is the number of yams. 8y+2y+3y = (8+2+3)y = 13y.
y = -1
2x-3y=13
7 + 8y - 3y + 2 =7 + 2 + 8y - 3y = 9 + 8y - 3y = 9 + 5y
3y+5.2=2-5y 8y=-3.2 y= -0.4
3(3y + 2) + 8y 9y + 6 + 8y 17y + 6
5y - 4 + 3y = 12 Combine like terms: 8y - 4 = 12 Add 4 to both sides: 8y = 16 Divide both sides by 8: y = 2
It is like saying, "How much is 8 yams plus 2 yams plus 3 yams?" Add the numbers: 8+2+3 = 13. The answer is the number of yams. 8y+2y+3y = (8+2+3)y = 13y.
y = -1
8y^3 - 3y^2 = y^2(8y - 3)
x = 2, y = 84x + 8y= 4(2) + 8(8)= 8 + 64= 72
5y-2y= 3y+2 5y-2y-3y= 2 0y= 2
2x-3y=13
2x-3y = 4 x+4y = -9 => x = -9-4y Substitute x = -9-4y into the top equation: 2(-9-4y)-3y = 4 -18-8y-3y = 4 -8y-3y = 4+18 -11y = 22 Divide both sides by -11 to find the value of y: y = -2 Substitute the value of y into the original equations to find the value of x: Therefore: x = -1 and y = -2 Remember that the product of a minus times a minus is equal to a plus when working out the original equations,
(3y + 5)(y - 2)