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Simplifying (5y + 7) + -1(4 + 4y) = 12 Reorder the terms: (7 + 5y) + -1(4 + 4y) = 12 Remove parenthesis around (7 + 5y) 7 + 5y + -1(4 + 4y) = 12 7 + 5y + (4 * -1 + 4y * -1) = 12 7 + 5y + (-4 + -4y) = 12 Reorder the terms: 7 + -4 + 5y + -4y = 12 Combine like terms: 7 + -4 = 3 3 + 5y + -4y = 12 Combine like terms: 5y + -4y = 1y 3 + 1y = 12 Solving 3 + 1y = 12 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 1y = 12 + -3 Combine like terms: 3 + -3 = 0 0 + 1y = 12 + -3 1y = 12 + -3 Combine like terms: 12 + -3 = 9 1y = 9 Divide each side by '1'. y = 9 Simplifying y = 9
| 3x-9=45 | | 4x+2=-(x-7) | | 7x^2+20xy+12y^2=0 | | X^2=360 | | 2x^2=280 | | 3x-7=2x+3+4x-5 | | 5x^2-90=0 | | 5+9m-4=8m+16-2m | | X+2/8=30/12 | | 2x+4y+16z=125.95 | | 3x^2-363=0 | | 2x+4y+16z=75.95 | | 4(x-5)=3(x-5)-(2-10x) | | 2(s+8)+5s= | | 2(q+3)+6q= | | 4x+3/10+6x-5/5=13/2 | | (3t-2)x(4t+5)= | | 5(s+8)+4s= | | -5(3n+1)=5 | | y=-8x-1 | | (3t-2)(4t+5)= | | 10x-8x=10 | | 4x+16y=75.95 | | 4x+16y=75 | | 16-3(-6)=34 | | -9-2(-6)=3 | | 8p-5q+3p-2q= | | 12+(-6/3)=10 | | 2p-6r+6p-9r= | | 0.02x^2+5=5.50 | | 6x+36=-3x | | 2x-30=-16 |