yes plug it in 3y-2x=14 3(2)-2(-4)=14 6+8=14 14=14
x-2y=14 x+3y =9 subtract the equations x-2y = 14 -x-3y = -9 -5y = 5 divie both sides by -5 y = -1 substitute y = -1 into the first equation (or second) x -2(-1) = 14 x + 2 = 14 x = 12
-14 minus -2 is -12
1. 4x + 3y = -22. x - y = -4Multiplying 2. by 3 gives: (we have done this so that we end up with a -3y)3. 3x - 3y = -121. added to 3. gives: (now, by adding, the 3y & -3y will cancel out)4. 7x = -14 (the 4x + the 3x gives 7x, the y's cancel out, -2 + -12 gives -14)thus x = -14/7x = -2Substituting x = -2 into 1. gives(4 * -2) + 3y = -2-8 + 3y = -23y = -2 + 83y = 6y = 2Thus x = -2 and y = 2.
-2/3
2(-2)-3y=6 which is equal to -4 -3y = 6 which is equal to -3y = 10 which is equal to y = -(10 / 3) = -3.333...
yes plug it in 3y-2x=14 3(2)-2(-4)=14 6+8=14 14=14
14
x-2y=14 x+3y =9 subtract the equations x-2y = 14 -x-3y = -9 -5y = 5 divie both sides by -5 y = -1 substitute y = -1 into the first equation (or second) x -2(-1) = 14 x + 2 = 14 x = 12
(14x-2y)+(7x-3y)+(-3x) = 14x-2y+7x-3y-3x =(14+7-3)x-(2+3)y =18x-5y
7x + 3y = 14 5x + 9y = 10 __________ (subtract bottom from top) 2x -6y = 4, therefore 2x = 4 + 6y, therefore x = 2 + 3y Insert x = 2 + 3y into the original equation and calculate 7(2 + 3y) +3y = 14 14 + 21y +3y = 14 24y = 0 y = 0 If y= 0, then x = 2 FINAL ANSWER!
-14 minus -2 is -12
1. 4x + 3y = -22. x - y = -4Multiplying 2. by 3 gives: (we have done this so that we end up with a -3y)3. 3x - 3y = -121. added to 3. gives: (now, by adding, the 3y & -3y will cancel out)4. 7x = -14 (the 4x + the 3x gives 7x, the y's cancel out, -2 + -12 gives -14)thus x = -14/7x = -2Substituting x = -2 into 1. gives(4 * -2) + 3y = -2-8 + 3y = -23y = -2 + 83y = 6y = 2Thus x = -2 and y = 2.
2y3 - 54 = 2*(y3 - 27) = 2*(y - 3)*(y2 + 3y + 9)
-2/3
Three Times A Number x Minus Two translates to 3x-2 Three Times A Number x Minus Two translates to 3•x-2 Three Times A Number y Minus Two translates to 3y-2 Three Times A Number z Minus Two translates to 3z-2
1) 2x + 1 = 3y 2) 4 = 3y - 10 this can be re-written as 3y = 4 + 10 Therefore 2x + 1 = 4 + 10 2x = 13 x = 6.5 Sustitute x = 6.5 in equation 1) above 2x + 1 = 3y 2 (6.5) + 1 = 3y therefore 3y = 13 +1 3y = 14 y = 14/3 Now substitute y = 14/3 in equation 2) above and watch what happens! 4 = 3(14/3) -10 4 = 4 Therefore the answer is correct!