1. Jika diketahui 5x -6 = 2x + 3, maka nilai x + 5 adalah..... 2. Penyelesaian dari sistem persamaan 3x - 2y = 7 dan 2x + y = 14 adalah x dan y Nilai -2x + 3y =

1. 5x - 6 = 2x + 3
5x-2x = 3+6
3x = 9
x = 3
x+5
3+5= 8

1. 5x - 6 = 2x +3
5x - 2x = 3 + 6
3x = 9
x = 9/3
x = 3

2. 3x - 2y = 7 (x1)
2x + y = 14 (x2) 4x + 2y = 28
3x - 2y = 7
__________+
*eliminasi 7x = 35
x = 35/7
x = 5
2 (5) + y = 14
10 + y = 14
y = 14 - 10
y = 4

Nilai -2x + 3y
= -2(5) + 3(4)
= -10 + 12
= 2

3. 5x (x-7)
= 5x^2 - 35x

Respect this answer with clicking thanks button:)