Mathematics
Algebraic methods: Substitution method and Elimination method.
Practice questions
What is the value of (x+y) from (0.5x+0.4y=6.1) and (0.3x-0.2y=1.7)?On solving (10x-3y=61) and (2x+3y=23), what is (y)?What is the value of \(x\) from \(\frac{x}{6}+\frac{y}{3}=6\) and \(\frac{x}{2}-\frac{y}{4}=5\)?The perimeter of a rectangle is (112) cm and its length is (16) cm more than its breadth. What is the area of the rectangle?If (px+5y=43) and (3x-y=17) have solution (x=6,\ y=1), what is the value of (p)?What is the value of (y) from (9x+2y=10) and (3x-2y=14)?If (x+y=31) and (4x-3y=19), what is the value of (2x-y)?What is the value of \(x-y\) from \(\frac{x+4y}{5}=10\) and \(\frac{3x-y}{4}=7\)?Which statement is correct about (4x+7y=31) and (8x+14y=65)?What is the value of (y) from (6x+9y=117) and (8x-3y=37)?If (6a+5b=460) and (4a+7b=444), what is the value of (b)?What is the value of (x+2y) from (9x-5y=42) and (3x+5y=30)?If (x=5y-8) and (4x+3y=61), what is the value of (y)?For (9x+15y=45) and (kx+5y=18) to have no solution, what is the value of (k)?Solving (3x+2y=19) and (5x-2y=21) by elimination gives which values of (x,y)?If (2x-3y=-7) and (4x+y=19), what is the value of (y) by substitution?For (7x+4y=2) and (3x-4y=18), what is the value of (x-y) in the solution?Solving (5x+6y=37) and (5x-2y=13), what is the value of (xy)?Solving (6x+5y=43) and (4x-5y=7) by elimination, what is the value of (x)?If (3x-2y=4) and (x+y=11), what is the value of (y) by substitution?